chore: add copyright headers

Make sure we obey the REUSE (https://reuse.software) specification and the
origin, copyright owner, and license of all files are clearly marked.

The whole project is under the EPL-2.0, except for trivial files where copyright
is not applicable that are marked with the CC0-1.0 license. Moreover, code
included from third parties is also available under the respective license.

chore: add CONTRIBUTORS.md

List all authors and supporting organizations in accordance with the REUSE
specification.

95 files changed, 478 insertions, 2 deletions

diff --git a/subprojects/store/build.gradle.kts b/subprojects/store/build.gradle.kts
index d62e5159..2c485020 100644
--- a/subprojects/store/build.gradle.kts
+++ b/subprojects/store/build.gradle.kts
@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+
 plugins {
         id("tools.refinery.gradle.java-library")
         id("tools.refinery.gradle.jmh")
diff --git a/subprojects/store/src/jmh/java/tools/refinery/store/map/benchmarks/ImmutablePutBenchmark.java b/subprojects/store/src/jmh/java/tools/refinery/store/map/benchmarks/ImmutablePutBenchmark.java
index cdf3d3c8..485fda3d 100644
--- a/subprojects/store/src/jmh/java/tools/refinery/store/map/benchmarks/ImmutablePutBenchmark.java
+++ b/subprojects/store/src/jmh/java/tools/refinery/store/map/benchmarks/ImmutablePutBenchmark.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.map.benchmarks;
 
 import java.util.ArrayList;
diff --git a/subprojects/store/src/jmh/java/tools/refinery/store/map/benchmarks/ImmutablePutExecutionPlan.java b/subprojects/store/src/jmh/java/tools/refinery/store/map/benchmarks/ImmutablePutExecutionPlan.java
index 756d504e..edd4f53e 100644
--- a/subprojects/store/src/jmh/java/tools/refinery/store/map/benchmarks/ImmutablePutExecutionPlan.java
+++ b/subprojects/store/src/jmh/java/tools/refinery/store/map/benchmarks/ImmutablePutExecutionPlan.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.map.benchmarks;
 
 import java.util.Random;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/adapter/AbstractModelAdapterBuilder.java b/subprojects/store/src/main/java/tools/refinery/store/adapter/AbstractModelAdapterBuilder.java
index 4c142217..70602ef5 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/adapter/AbstractModelAdapterBuilder.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/adapter/AbstractModelAdapterBuilder.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.adapter;
 
 import tools.refinery.store.model.ModelStore;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/adapter/AdapterList.java b/subprojects/store/src/main/java/tools/refinery/store/adapter/AdapterList.java
index 74bae6f0..e896d8d9 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/adapter/AdapterList.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/adapter/AdapterList.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.adapter;
 
 import org.jetbrains.annotations.NotNull;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/adapter/AnyModelAdapterType.java b/subprojects/store/src/main/java/tools/refinery/store/adapter/AnyModelAdapterType.java
index 37a247fe..f161a60b 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/adapter/AnyModelAdapterType.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/adapter/AnyModelAdapterType.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.adapter;
 
 import java.util.Collection;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/adapter/ModelAdapter.java b/subprojects/store/src/main/java/tools/refinery/store/adapter/ModelAdapter.java
index aa079e01..672007aa 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/adapter/ModelAdapter.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/adapter/ModelAdapter.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.adapter;
 
 import tools.refinery.store.model.Model;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/adapter/ModelAdapterBuilder.java b/subprojects/store/src/main/java/tools/refinery/store/adapter/ModelAdapterBuilder.java
index 64b3e59f..709cbb3e 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/adapter/ModelAdapterBuilder.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/adapter/ModelAdapterBuilder.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.adapter;
 
 import tools.refinery.store.model.ModelStore;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/adapter/ModelAdapterBuilderFactory.java b/subprojects/store/src/main/java/tools/refinery/store/adapter/ModelAdapterBuilderFactory.java
index 7c9b01bc..1d549d5b 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/adapter/ModelAdapterBuilderFactory.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/adapter/ModelAdapterBuilderFactory.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.adapter;
 
 import tools.refinery.store.model.ModelStoreBuilder;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/adapter/ModelAdapterType.java b/subprojects/store/src/main/java/tools/refinery/store/adapter/ModelAdapterType.java
index 82ddeb12..6255fe52 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/adapter/ModelAdapterType.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/adapter/ModelAdapterType.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.adapter;
 
 import tools.refinery.store.model.Model;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/adapter/ModelStoreAdapter.java b/subprojects/store/src/main/java/tools/refinery/store/adapter/ModelStoreAdapter.java
index 1eb40ada..bc5f7b6b 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/adapter/ModelStoreAdapter.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/adapter/ModelStoreAdapter.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.adapter;
 
 import tools.refinery.store.model.Model;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/map/AnyVersionedMap.java b/subprojects/store/src/main/java/tools/refinery/store/map/AnyVersionedMap.java
index f82a8bb1..25fc91e6 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/map/AnyVersionedMap.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/map/AnyVersionedMap.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.map;
 
 public sealed interface AnyVersionedMap extends Versioned permits VersionedMap {
diff --git a/subprojects/store/src/main/java/tools/refinery/store/map/ContentHashCode.java b/subprojects/store/src/main/java/tools/refinery/store/map/ContentHashCode.java
index 8deeab23..cbea05e1 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/map/ContentHashCode.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/map/ContentHashCode.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.map;
 
 public enum ContentHashCode {
diff --git a/subprojects/store/src/main/java/tools/refinery/store/map/ContinousHashProvider.java b/subprojects/store/src/main/java/tools/refinery/store/map/ContinousHashProvider.java
index 75f1e2ab..8e451230 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/map/ContinousHashProvider.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/map/ContinousHashProvider.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.map;
 
 import tools.refinery.store.map.internal.Node;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/map/Cursor.java b/subprojects/store/src/main/java/tools/refinery/store/map/Cursor.java
index b420585c..3bdca104 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/map/Cursor.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/map/Cursor.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.map;
 
 import java.util.Set;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/map/CursorAsIterator.java b/subprojects/store/src/main/java/tools/refinery/store/map/CursorAsIterator.java
index 65ae6648..c7e4d279 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/map/CursorAsIterator.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/map/CursorAsIterator.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.map;
 
 import java.util.Iterator;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/map/Cursors.java b/subprojects/store/src/main/java/tools/refinery/store/map/Cursors.java
index fc8e628b..0a94d449 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/map/Cursors.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/map/Cursors.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.map;
 
 public final class Cursors {
diff --git a/subprojects/store/src/main/java/tools/refinery/store/map/DiffCursor.java b/subprojects/store/src/main/java/tools/refinery/store/map/DiffCursor.java
index 701f3ec8..4322e041 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/map/DiffCursor.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/map/DiffCursor.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.map;
 
 public interface DiffCursor<K, V> extends Cursor<K,V> {
diff --git a/subprojects/store/src/main/java/tools/refinery/store/map/MapAsIterable.java b/subprojects/store/src/main/java/tools/refinery/store/map/MapAsIterable.java
index 6b986732..199b548f 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/map/MapAsIterable.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/map/MapAsIterable.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.map;
 
 import java.util.Iterator;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/map/Versioned.java b/subprojects/store/src/main/java/tools/refinery/store/map/Versioned.java
index 6a23e9d5..55720db3 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/map/Versioned.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/map/Versioned.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.map;
 
 public interface Versioned {
diff --git a/subprojects/store/src/main/java/tools/refinery/store/map/VersionedMap.java b/subprojects/store/src/main/java/tools/refinery/store/map/VersionedMap.java
index 31985e94..9bbde24d 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/map/VersionedMap.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/map/VersionedMap.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.map;
 
 public non-sealed interface VersionedMap<K, V> extends AnyVersionedMap {
diff --git a/subprojects/store/src/main/java/tools/refinery/store/map/VersionedMapStore.java b/subprojects/store/src/main/java/tools/refinery/store/map/VersionedMapStore.java
index a8d7fb1a..5aafa338 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/map/VersionedMapStore.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/map/VersionedMapStore.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.map;
 
 import java.util.Set;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/map/VersionedMapStoreConfiguration.java b/subprojects/store/src/main/java/tools/refinery/store/map/VersionedMapStoreConfiguration.java
index 3856460d..b00cd961 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/map/VersionedMapStoreConfiguration.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/map/VersionedMapStoreConfiguration.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.map;
 
 public class VersionedMapStoreConfiguration {
diff --git a/subprojects/store/src/main/java/tools/refinery/store/map/VersionedMapStoreImpl.java b/subprojects/store/src/main/java/tools/refinery/store/map/VersionedMapStoreImpl.java
index 113874e7..aade4aeb 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/map/VersionedMapStoreImpl.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/map/VersionedMapStoreImpl.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.map;
 
 import tools.refinery.store.map.internal.ImmutableNode;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/map/internal/HashClash.java b/subprojects/store/src/main/java/tools/refinery/store/map/internal/HashClash.java
index 5402ed4a..61b3d1b8 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/map/internal/HashClash.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/map/internal/HashClash.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.map.internal;
 
 enum HashClash {
diff --git a/subprojects/store/src/main/java/tools/refinery/store/map/internal/ImmutableNode.java b/subprojects/store/src/main/java/tools/refinery/store/map/internal/ImmutableNode.java
index 9397dede..03dffc15 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/map/internal/ImmutableNode.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/map/internal/ImmutableNode.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.map.internal;
 
 import java.util.Arrays;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/map/internal/MapCursor.java b/subprojects/store/src/main/java/tools/refinery/store/map/internal/MapCursor.java
index 91a71e3d..f34ec7bb 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/map/internal/MapCursor.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/map/internal/MapCursor.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.map.internal;
 
 import tools.refinery.store.map.AnyVersionedMap;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/map/internal/MapDiffCursor.java b/subprojects/store/src/main/java/tools/refinery/store/map/internal/MapDiffCursor.java
index 9cd78113..d31f1a05 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/map/internal/MapDiffCursor.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/map/internal/MapDiffCursor.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.map.internal;
 
 import tools.refinery.store.map.AnyVersionedMap;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/map/internal/MutableNode.java b/subprojects/store/src/main/java/tools/refinery/store/map/internal/MutableNode.java
index 7c3cf7e8..1129ee5a 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/map/internal/MutableNode.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/map/internal/MutableNode.java
@@ -1,10 +1,15 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.map.internal;
 
+import tools.refinery.store.map.ContinousHashProvider;
+
 import java.util.Arrays;
 import java.util.Map;
 
-import tools.refinery.store.map.ContinousHashProvider;
-
 public class MutableNode<K, V> extends Node<K, V> {
         int cachedHash;
         protected Object[] content;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/map/internal/Node.java b/subprojects/store/src/main/java/tools/refinery/store/map/internal/Node.java
index 2260cd5b..958d645f 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/map/internal/Node.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/map/internal/Node.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.map.internal;
 
 import java.util.Map;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/map/internal/OldValueBox.java b/subprojects/store/src/main/java/tools/refinery/store/map/internal/OldValueBox.java
index 5534c703..354af51d 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/map/internal/OldValueBox.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/map/internal/OldValueBox.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.map.internal;
 
 public class OldValueBox<V>{
diff --git a/subprojects/store/src/main/java/tools/refinery/store/map/internal/VersionedMapImpl.java b/subprojects/store/src/main/java/tools/refinery/store/map/internal/VersionedMapImpl.java
index 301bcb95..7abece0d 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/map/internal/VersionedMapImpl.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/map/internal/VersionedMapImpl.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.map.internal;
 
 import tools.refinery.store.map.*;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/model/AnyInterpretation.java b/subprojects/store/src/main/java/tools/refinery/store/model/AnyInterpretation.java
index d18ba71d..f906b48a 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/model/AnyInterpretation.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/model/AnyInterpretation.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.model;
 
 import tools.refinery.store.representation.AnySymbol;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/model/Interpretation.java b/subprojects/store/src/main/java/tools/refinery/store/model/Interpretation.java
index 55949d0c..26ad9a69 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/model/Interpretation.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/model/Interpretation.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.model;
 
 import tools.refinery.store.map.Cursor;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/model/InterpretationListener.java b/subprojects/store/src/main/java/tools/refinery/store/model/InterpretationListener.java
index 73950779..6f7b24c1 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/model/InterpretationListener.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/model/InterpretationListener.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.model;
 
 import tools.refinery.store.tuple.Tuple;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/model/Model.java b/subprojects/store/src/main/java/tools/refinery/store/model/Model.java
index 6ca1ac7b..f4131756 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/model/Model.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/model/Model.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.model;
 
 import tools.refinery.store.adapter.ModelAdapter;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/model/ModelDiffCursor.java b/subprojects/store/src/main/java/tools/refinery/store/model/ModelDiffCursor.java
index 97bf2039..7b236891 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/model/ModelDiffCursor.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/model/ModelDiffCursor.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.model;
 
 import tools.refinery.store.map.DiffCursor;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/model/ModelListener.java b/subprojects/store/src/main/java/tools/refinery/store/model/ModelListener.java
index f67540bb..a9ad8cfd 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/model/ModelListener.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/model/ModelListener.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.model;
 
 public interface ModelListener {
diff --git a/subprojects/store/src/main/java/tools/refinery/store/model/ModelStore.java b/subprojects/store/src/main/java/tools/refinery/store/model/ModelStore.java
index 2e7e62c3..a72399f7 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/model/ModelStore.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/model/ModelStore.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.model;
 
 import tools.refinery.store.adapter.ModelAdapterType;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/model/ModelStoreBuilder.java b/subprojects/store/src/main/java/tools/refinery/store/model/ModelStoreBuilder.java
index 289099da..d9354bdb 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/model/ModelStoreBuilder.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/model/ModelStoreBuilder.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.model;
 
 import tools.refinery.store.adapter.ModelAdapterBuilder;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/model/TupleHashProvider.java b/subprojects/store/src/main/java/tools/refinery/store/model/TupleHashProvider.java
index 4bcf9ff4..fe1c2ab5 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/model/TupleHashProvider.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/model/TupleHashProvider.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.model;
 
 import tools.refinery.store.map.ContinousHashProvider;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/model/TupleHashProviderBitMagic.java b/subprojects/store/src/main/java/tools/refinery/store/model/TupleHashProviderBitMagic.java
index 33059a1b..14116a90 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/model/TupleHashProviderBitMagic.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/model/TupleHashProviderBitMagic.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.model;
 
 import tools.refinery.store.map.ContinousHashProvider;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/model/internal/ModelAction.java b/subprojects/store/src/main/java/tools/refinery/store/model/internal/ModelAction.java
index f68859db..dbd95d80 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/model/internal/ModelAction.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/model/internal/ModelAction.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.model.internal;
 
 public enum ModelAction {
diff --git a/subprojects/store/src/main/java/tools/refinery/store/model/internal/ModelImpl.java b/subprojects/store/src/main/java/tools/refinery/store/model/internal/ModelImpl.java
index 9eb438c4..50a408da 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/model/internal/ModelImpl.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/model/internal/ModelImpl.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.model.internal;
 
 import tools.refinery.store.adapter.AdapterList;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/model/internal/ModelStoreBuilderImpl.java b/subprojects/store/src/main/java/tools/refinery/store/model/internal/ModelStoreBuilderImpl.java
index 79f7195d..70bccb96 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/model/internal/ModelStoreBuilderImpl.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/model/internal/ModelStoreBuilderImpl.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.model.internal;
 
 import tools.refinery.store.adapter.AdapterList;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/model/internal/ModelStoreImpl.java b/subprojects/store/src/main/java/tools/refinery/store/model/internal/ModelStoreImpl.java
index e8c205e4..bfae7181 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/model/internal/ModelStoreImpl.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/model/internal/ModelStoreImpl.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.model.internal;
 
 import tools.refinery.store.adapter.AdapterList;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/model/internal/SymbolEquivalenceClass.java b/subprojects/store/src/main/java/tools/refinery/store/model/internal/SymbolEquivalenceClass.java
index 5bf1b90d..136f2976 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/model/internal/SymbolEquivalenceClass.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/model/internal/SymbolEquivalenceClass.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.model.internal;
 
 import tools.refinery.store.representation.Symbol;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/model/internal/VersionedInterpretation.java b/subprojects/store/src/main/java/tools/refinery/store/model/internal/VersionedInterpretation.java
index 6d82f5d7..86101ce3 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/model/internal/VersionedInterpretation.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/model/internal/VersionedInterpretation.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.model.internal;
 
 import tools.refinery.store.map.Cursor;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/representation/AbstractDomain.java b/subprojects/store/src/main/java/tools/refinery/store/representation/AbstractDomain.java
index 18903ead..52c740e8 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/representation/AbstractDomain.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/representation/AbstractDomain.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.representation;
 
 import java.util.Optional;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/representation/AnyAbstractDomain.java b/subprojects/store/src/main/java/tools/refinery/store/representation/AnyAbstractDomain.java
index 4c428a1e..c354fab7 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/representation/AnyAbstractDomain.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/representation/AnyAbstractDomain.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.representation;
 
 public sealed interface AnyAbstractDomain permits AbstractDomain {
diff --git a/subprojects/store/src/main/java/tools/refinery/store/representation/AnySymbol.java b/subprojects/store/src/main/java/tools/refinery/store/representation/AnySymbol.java
index 20b9eead..b2377905 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/representation/AnySymbol.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/representation/AnySymbol.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.representation;
 
 public sealed interface AnySymbol permits Symbol {
diff --git a/subprojects/store/src/main/java/tools/refinery/store/representation/Symbol.java b/subprojects/store/src/main/java/tools/refinery/store/representation/Symbol.java
index 30b1c03f..aad88921 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/representation/Symbol.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/representation/Symbol.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.representation;
 
 public record Symbol<T>(String name, int arity, Class<T> valueType, T defaultValue) implements AnySymbol {
diff --git a/subprojects/store/src/main/java/tools/refinery/store/representation/TruthValue.java b/subprojects/store/src/main/java/tools/refinery/store/representation/TruthValue.java
index b7893fd3..40baf9a5 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/representation/TruthValue.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/representation/TruthValue.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.representation;
 
 public enum TruthValue {
diff --git a/subprojects/store/src/main/java/tools/refinery/store/representation/TruthValueDomain.java b/subprojects/store/src/main/java/tools/refinery/store/representation/TruthValueDomain.java
index 29858bce..89f8dd19 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/representation/TruthValueDomain.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/representation/TruthValueDomain.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.representation;
 
 import java.util.Optional;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/representation/cardinality/CardinalityInterval.java b/subprojects/store/src/main/java/tools/refinery/store/representation/cardinality/CardinalityInterval.java
index 273d0de7..704ca2fc 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/representation/cardinality/CardinalityInterval.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/representation/cardinality/CardinalityInterval.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.representation.cardinality;
 
 public sealed interface CardinalityInterval permits NonEmptyCardinalityInterval, EmptyCardinalityInterval {
diff --git a/subprojects/store/src/main/java/tools/refinery/store/representation/cardinality/CardinalityIntervals.java b/subprojects/store/src/main/java/tools/refinery/store/representation/cardinality/CardinalityIntervals.java
index e1a08bf9..ad16a3e8 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/representation/cardinality/CardinalityIntervals.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/representation/cardinality/CardinalityIntervals.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.representation.cardinality;
 
 public final class CardinalityIntervals {
diff --git a/subprojects/store/src/main/java/tools/refinery/store/representation/cardinality/EmptyCardinalityInterval.java b/subprojects/store/src/main/java/tools/refinery/store/representation/cardinality/EmptyCardinalityInterval.java
index ab3ad9d1..49911c29 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/representation/cardinality/EmptyCardinalityInterval.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/representation/cardinality/EmptyCardinalityInterval.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.representation.cardinality;
 
 public final class EmptyCardinalityInterval implements CardinalityInterval {
diff --git a/subprojects/store/src/main/java/tools/refinery/store/representation/cardinality/FiniteUpperCardinality.java b/subprojects/store/src/main/java/tools/refinery/store/representation/cardinality/FiniteUpperCardinality.java
index 381c8a57..82afdbbc 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/representation/cardinality/FiniteUpperCardinality.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/representation/cardinality/FiniteUpperCardinality.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.representation.cardinality;
 
 import org.jetbrains.annotations.NotNull;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/representation/cardinality/NonEmptyCardinalityInterval.java b/subprojects/store/src/main/java/tools/refinery/store/representation/cardinality/NonEmptyCardinalityInterval.java
index 32b3786f..38bd53bf 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/representation/cardinality/NonEmptyCardinalityInterval.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/representation/cardinality/NonEmptyCardinalityInterval.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.representation.cardinality;
 
 import java.util.function.BinaryOperator;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/representation/cardinality/UnboundedUpperCardinality.java b/subprojects/store/src/main/java/tools/refinery/store/representation/cardinality/UnboundedUpperCardinality.java
index 593bc322..a5634020 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/representation/cardinality/UnboundedUpperCardinality.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/representation/cardinality/UnboundedUpperCardinality.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.representation.cardinality;
 
 import org.jetbrains.annotations.NotNull;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/representation/cardinality/UpperCardinalities.java b/subprojects/store/src/main/java/tools/refinery/store/representation/cardinality/UpperCardinalities.java
index d850fdc9..1e18dde0 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/representation/cardinality/UpperCardinalities.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/representation/cardinality/UpperCardinalities.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.representation.cardinality;
 
 public final class UpperCardinalities {
diff --git a/subprojects/store/src/main/java/tools/refinery/store/representation/cardinality/UpperCardinality.java b/subprojects/store/src/main/java/tools/refinery/store/representation/cardinality/UpperCardinality.java
index c6e31cb7..5dbaa922 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/representation/cardinality/UpperCardinality.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/representation/cardinality/UpperCardinality.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.representation.cardinality;
 
 public sealed interface UpperCardinality extends Comparable<UpperCardinality> permits FiniteUpperCardinality,
diff --git a/subprojects/store/src/main/java/tools/refinery/store/tuple/Tuple.java b/subprojects/store/src/main/java/tools/refinery/store/tuple/Tuple.java
index 51e2895a..6700417a 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/tuple/Tuple.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/tuple/Tuple.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.tuple;
 
 public sealed interface Tuple permits Tuple0, Tuple1, Tuple2, Tuple3, Tuple4, TupleN {
diff --git a/subprojects/store/src/main/java/tools/refinery/store/tuple/Tuple0.java b/subprojects/store/src/main/java/tools/refinery/store/tuple/Tuple0.java
index 266e2cca..1451099c 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/tuple/Tuple0.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/tuple/Tuple0.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.tuple;
 
 import static tools.refinery.store.tuple.TupleConstants.TUPLE_BEGIN;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/tuple/Tuple1.java b/subprojects/store/src/main/java/tools/refinery/store/tuple/Tuple1.java
index bdcc47b5..cda145d7 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/tuple/Tuple1.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/tuple/Tuple1.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.tuple;
 
 import tools.refinery.store.model.TupleHashProvider;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/tuple/Tuple2.java b/subprojects/store/src/main/java/tools/refinery/store/tuple/Tuple2.java
index fc0fbd8e..b669674b 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/tuple/Tuple2.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/tuple/Tuple2.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.tuple;
 
 import static tools.refinery.store.tuple.TupleConstants.*;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/tuple/Tuple3.java b/subprojects/store/src/main/java/tools/refinery/store/tuple/Tuple3.java
index a6ec17b0..542ed328 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/tuple/Tuple3.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/tuple/Tuple3.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.tuple;
 
 import static tools.refinery.store.tuple.TupleConstants.*;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/tuple/Tuple4.java b/subprojects/store/src/main/java/tools/refinery/store/tuple/Tuple4.java
index 66cef32b..121a15f6 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/tuple/Tuple4.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/tuple/Tuple4.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.tuple;
 
 import static tools.refinery.store.tuple.TupleConstants.*;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/tuple/TupleConstants.java b/subprojects/store/src/main/java/tools/refinery/store/tuple/TupleConstants.java
index 3d95a655..f7d27848 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/tuple/TupleConstants.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/tuple/TupleConstants.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.tuple;
 
 final class TupleConstants {
diff --git a/subprojects/store/src/main/java/tools/refinery/store/tuple/TupleN.java b/subprojects/store/src/main/java/tools/refinery/store/tuple/TupleN.java
index 512bab49..b66af491 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/tuple/TupleN.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/tuple/TupleN.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.tuple;
 
 import java.util.Arrays;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/util/CollectionsUtil.java b/subprojects/store/src/main/java/tools/refinery/store/util/CollectionsUtil.java
index 841d0dfa..adecd79b 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/util/CollectionsUtil.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/util/CollectionsUtil.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.util;
 
 import java.util.Iterator;
diff --git a/subprojects/store/src/main/java/tools/refinery/store/util/CycleDetectingMapper.java b/subprojects/store/src/main/java/tools/refinery/store/util/CycleDetectingMapper.java
index 8a151d01..78ad2ad7 100644
--- a/subprojects/store/src/main/java/tools/refinery/store/util/CycleDetectingMapper.java
+++ b/subprojects/store/src/main/java/tools/refinery/store/util/CycleDetectingMapper.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.util;
 
 import java.util.*;
diff --git a/subprojects/store/src/test/java/tools/refinery/store/map/tests/MapUnitTests.java b/subprojects/store/src/test/java/tools/refinery/store/map/tests/MapUnitTests.java
index 77c62305..153f2e78 100644
--- a/subprojects/store/src/test/java/tools/refinery/store/map/tests/MapUnitTests.java
+++ b/subprojects/store/src/test/java/tools/refinery/store/map/tests/MapUnitTests.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.map.tests;
 
 import org.junit.jupiter.api.Test;
diff --git a/subprojects/store/src/test/java/tools/refinery/store/map/tests/fuzz/CommitFuzzTest.java b/subprojects/store/src/test/java/tools/refinery/store/map/tests/fuzz/CommitFuzzTest.java
index 1f9d022f..eabe5bd1 100644
--- a/subprojects/store/src/test/java/tools/refinery/store/map/tests/fuzz/CommitFuzzTest.java
+++ b/subprojects/store/src/test/java/tools/refinery/store/map/tests/fuzz/CommitFuzzTest.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.map.tests.fuzz;
 
 import static org.junit.jupiter.api.Assertions.fail;
diff --git a/subprojects/store/src/test/java/tools/refinery/store/map/tests/fuzz/ContentEqualsFuzzTest.java b/subprojects/store/src/test/java/tools/refinery/store/map/tests/fuzz/ContentEqualsFuzzTest.java
index 93ecfec3..b0502a2b 100644
--- a/subprojects/store/src/test/java/tools/refinery/store/map/tests/fuzz/ContentEqualsFuzzTest.java
+++ b/subprojects/store/src/test/java/tools/refinery/store/map/tests/fuzz/ContentEqualsFuzzTest.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.map.tests.fuzz;
 
 import org.junit.jupiter.api.Tag;
diff --git a/subprojects/store/src/test/java/tools/refinery/store/map/tests/fuzz/DiffCursorFuzzTest.java b/subprojects/store/src/test/java/tools/refinery/store/map/tests/fuzz/DiffCursorFuzzTest.java
index e6334224..8274336e 100644
--- a/subprojects/store/src/test/java/tools/refinery/store/map/tests/fuzz/DiffCursorFuzzTest.java
+++ b/subprojects/store/src/test/java/tools/refinery/store/map/tests/fuzz/DiffCursorFuzzTest.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.map.tests.fuzz;
 
 import static org.junit.jupiter.api.Assertions.fail;
diff --git a/subprojects/store/src/test/java/tools/refinery/store/map/tests/fuzz/MultiThreadFuzzTest.java b/subprojects/store/src/test/java/tools/refinery/store/map/tests/fuzz/MultiThreadFuzzTest.java
index 1ab431a8..ab2b9435 100644
--- a/subprojects/store/src/test/java/tools/refinery/store/map/tests/fuzz/MultiThreadFuzzTest.java
+++ b/subprojects/store/src/test/java/tools/refinery/store/map/tests/fuzz/MultiThreadFuzzTest.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.map.tests.fuzz;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
diff --git a/subprojects/store/src/test/java/tools/refinery/store/map/tests/fuzz/MultiThreadTestRunnable.java b/subprojects/store/src/test/java/tools/refinery/store/map/tests/fuzz/MultiThreadTestRunnable.java
index f77f9ee5..502c8362 100644
--- a/subprojects/store/src/test/java/tools/refinery/store/map/tests/fuzz/MultiThreadTestRunnable.java
+++ b/subprojects/store/src/test/java/tools/refinery/store/map/tests/fuzz/MultiThreadTestRunnable.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.map.tests.fuzz;
 
 import java.util.ArrayList;
diff --git a/subprojects/store/src/test/java/tools/refinery/store/map/tests/fuzz/MutableFuzzTest.java b/subprojects/store/src/test/java/tools/refinery/store/map/tests/fuzz/MutableFuzzTest.java
index d40c49c4..32dde0da 100644
--- a/subprojects/store/src/test/java/tools/refinery/store/map/tests/fuzz/MutableFuzzTest.java
+++ b/subprojects/store/src/test/java/tools/refinery/store/map/tests/fuzz/MutableFuzzTest.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.map.tests.fuzz;
 
 import static org.junit.jupiter.api.Assertions.fail;
diff --git a/subprojects/store/src/test/java/tools/refinery/store/map/tests/fuzz/MutableImmutableCompareFuzzTest.java b/subprojects/store/src/test/java/tools/refinery/store/map/tests/fuzz/MutableImmutableCompareFuzzTest.java
index 410705a2..347c49be 100644
--- a/subprojects/store/src/test/java/tools/refinery/store/map/tests/fuzz/MutableImmutableCompareFuzzTest.java
+++ b/subprojects/store/src/test/java/tools/refinery/store/map/tests/fuzz/MutableImmutableCompareFuzzTest.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.map.tests.fuzz;
 
 import static org.junit.jupiter.api.Assertions.fail;
diff --git a/subprojects/store/src/test/java/tools/refinery/store/map/tests/fuzz/RestoreFuzzTest.java b/subprojects/store/src/test/java/tools/refinery/store/map/tests/fuzz/RestoreFuzzTest.java
index 2e29a03f..f7b9d61e 100644
--- a/subprojects/store/src/test/java/tools/refinery/store/map/tests/fuzz/RestoreFuzzTest.java
+++ b/subprojects/store/src/test/java/tools/refinery/store/map/tests/fuzz/RestoreFuzzTest.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.map.tests.fuzz;
 
 import static org.junit.jupiter.api.Assertions.fail;
diff --git a/subprojects/store/src/test/java/tools/refinery/store/map/tests/fuzz/SharedStoreFuzzTest.java b/subprojects/store/src/test/java/tools/refinery/store/map/tests/fuzz/SharedStoreFuzzTest.java
index 914a0f63..4b4172d0 100644
--- a/subprojects/store/src/test/java/tools/refinery/store/map/tests/fuzz/SharedStoreFuzzTest.java
+++ b/subprojects/store/src/test/java/tools/refinery/store/map/tests/fuzz/SharedStoreFuzzTest.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.map.tests.fuzz;
 
 import java.util.HashMap;
diff --git a/subprojects/store/src/test/java/tools/refinery/store/map/tests/fuzz/utils/FuzzTestUtils.java b/subprojects/store/src/test/java/tools/refinery/store/map/tests/fuzz/utils/FuzzTestUtils.java
index e75d7f5a..a819d348 100644
--- a/subprojects/store/src/test/java/tools/refinery/store/map/tests/fuzz/utils/FuzzTestUtils.java
+++ b/subprojects/store/src/test/java/tools/refinery/store/map/tests/fuzz/utils/FuzzTestUtils.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.map.tests.fuzz.utils;
 
 import java.util.Arrays;
diff --git a/subprojects/store/src/test/java/tools/refinery/store/map/tests/fuzz/utils/FuzzTestUtilsTest.java b/subprojects/store/src/test/java/tools/refinery/store/map/tests/fuzz/utils/FuzzTestUtilsTest.java
index 72f2a46c..dc621574 100644
--- a/subprojects/store/src/test/java/tools/refinery/store/map/tests/fuzz/utils/FuzzTestUtilsTest.java
+++ b/subprojects/store/src/test/java/tools/refinery/store/map/tests/fuzz/utils/FuzzTestUtilsTest.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.map.tests.fuzz.utils;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
diff --git a/subprojects/store/src/test/java/tools/refinery/store/map/tests/utils/MapTestEnvironment.java b/subprojects/store/src/test/java/tools/refinery/store/map/tests/utils/MapTestEnvironment.java
index 2d03ebaf..f861f496 100644
--- a/subprojects/store/src/test/java/tools/refinery/store/map/tests/utils/MapTestEnvironment.java
+++ b/subprojects/store/src/test/java/tools/refinery/store/map/tests/utils/MapTestEnvironment.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.map.tests.utils;
 
 import tools.refinery.store.map.*;
diff --git a/subprojects/store/src/test/java/tools/refinery/store/model/hashtests/HashEfficiencyTest.java b/subprojects/store/src/test/java/tools/refinery/store/model/hashtests/HashEfficiencyTest.java
index bb083805..4d4f5e26 100644
--- a/subprojects/store/src/test/java/tools/refinery/store/model/hashtests/HashEfficiencyTest.java
+++ b/subprojects/store/src/test/java/tools/refinery/store/model/hashtests/HashEfficiencyTest.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.model.hashtests;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
diff --git a/subprojects/store/src/test/java/tools/refinery/store/model/tests/ModelTest.java b/subprojects/store/src/test/java/tools/refinery/store/model/tests/ModelTest.java
index 9536a444..1017ff28 100644
--- a/subprojects/store/src/test/java/tools/refinery/store/model/tests/ModelTest.java
+++ b/subprojects/store/src/test/java/tools/refinery/store/model/tests/ModelTest.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.model.tests;
 
 import org.junit.jupiter.api.Test;
diff --git a/subprojects/store/src/test/java/tools/refinery/store/representation/cardinality/CardinalityIntervalTest.java b/subprojects/store/src/test/java/tools/refinery/store/representation/cardinality/CardinalityIntervalTest.java
index 96fdc49e..6a66fa84 100644
--- a/subprojects/store/src/test/java/tools/refinery/store/representation/cardinality/CardinalityIntervalTest.java
+++ b/subprojects/store/src/test/java/tools/refinery/store/representation/cardinality/CardinalityIntervalTest.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.representation.cardinality;
 
 import org.junit.jupiter.params.ParameterizedTest;
diff --git a/subprojects/store/src/test/java/tools/refinery/store/representation/cardinality/CardinalityIntervalsTest.java b/subprojects/store/src/test/java/tools/refinery/store/representation/cardinality/CardinalityIntervalsTest.java
index 4a9ef8da..9fe76159 100644
--- a/subprojects/store/src/test/java/tools/refinery/store/representation/cardinality/CardinalityIntervalsTest.java
+++ b/subprojects/store/src/test/java/tools/refinery/store/representation/cardinality/CardinalityIntervalsTest.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.representation.cardinality;
 
 import org.junit.jupiter.api.Test;
diff --git a/subprojects/store/src/test/java/tools/refinery/store/representation/cardinality/EmptyCardinalityIntervalTest.java b/subprojects/store/src/test/java/tools/refinery/store/representation/cardinality/EmptyCardinalityIntervalTest.java
index e8b77b9f..24a788a8 100644
--- a/subprojects/store/src/test/java/tools/refinery/store/representation/cardinality/EmptyCardinalityIntervalTest.java
+++ b/subprojects/store/src/test/java/tools/refinery/store/representation/cardinality/EmptyCardinalityIntervalTest.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.representation.cardinality;
 
 import org.junit.jupiter.api.Test;
diff --git a/subprojects/store/src/test/java/tools/refinery/store/representation/cardinality/FiniteCardinalityIntervalTest.java b/subprojects/store/src/test/java/tools/refinery/store/representation/cardinality/FiniteCardinalityIntervalTest.java
index 9a190818..6cf56fae 100644
--- a/subprojects/store/src/test/java/tools/refinery/store/representation/cardinality/FiniteCardinalityIntervalTest.java
+++ b/subprojects/store/src/test/java/tools/refinery/store/representation/cardinality/FiniteCardinalityIntervalTest.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.representation.cardinality;
 
 import org.junit.jupiter.api.Test;
diff --git a/subprojects/store/src/test/java/tools/refinery/store/representation/cardinality/FiniteUpperCardinalityTest.java b/subprojects/store/src/test/java/tools/refinery/store/representation/cardinality/FiniteUpperCardinalityTest.java
index 90c21759..7c641c47 100644
--- a/subprojects/store/src/test/java/tools/refinery/store/representation/cardinality/FiniteUpperCardinalityTest.java
+++ b/subprojects/store/src/test/java/tools/refinery/store/representation/cardinality/FiniteUpperCardinalityTest.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.representation.cardinality;
 
 import org.junit.jupiter.api.Test;
diff --git a/subprojects/store/src/test/java/tools/refinery/store/representation/cardinality/UpperCardinalitiesTest.java b/subprojects/store/src/test/java/tools/refinery/store/representation/cardinality/UpperCardinalitiesTest.java
index 3c7c0320..e61f7b36 100644
--- a/subprojects/store/src/test/java/tools/refinery/store/representation/cardinality/UpperCardinalitiesTest.java
+++ b/subprojects/store/src/test/java/tools/refinery/store/representation/cardinality/UpperCardinalitiesTest.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.representation.cardinality;
 
 import org.junit.jupiter.api.Test;
diff --git a/subprojects/store/src/test/java/tools/refinery/store/representation/cardinality/UpperCardinalityTest.java b/subprojects/store/src/test/java/tools/refinery/store/representation/cardinality/UpperCardinalityTest.java
index e87ce29b..10b4dd20 100644
--- a/subprojects/store/src/test/java/tools/refinery/store/representation/cardinality/UpperCardinalityTest.java
+++ b/subprojects/store/src/test/java/tools/refinery/store/representation/cardinality/UpperCardinalityTest.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.representation.cardinality;
 
 import org.junit.jupiter.params.ParameterizedTest;
diff --git a/subprojects/store/src/test/java/tools/refinery/store/util/CollectionsUtilTests.java b/subprojects/store/src/test/java/tools/refinery/store/util/CollectionsUtilTests.java
index 171be0e5..8d50fa8a 100644
--- a/subprojects/store/src/test/java/tools/refinery/store/util/CollectionsUtilTests.java
+++ b/subprojects/store/src/test/java/tools/refinery/store/util/CollectionsUtilTests.java
@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
 package tools.refinery.store.util;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;