GH-4899 Make the new CollectionFactory methods experimental

Author: JervenBolleman

core/collection-factory/api/src/main/java/org/eclipse/rdf4j/collection/factory/api/CollectionFactory.java

@@ -119,6 +119,7 @@ public Set<BindingSet> createSetOfBindingSets(Supplier<MutableBindingSet> create
 	/**
 	 * @return a new queue that may be optimized and may use the functions passed in.
 	 */
+	@Experimental
 	public default Queue<BindingSet> createBindingSetQueue(Supplier<MutableBindingSet> create,
 			Function<String, Predicate<BindingSet>> getHas, Function<String, Function<BindingSet, Value>> getget,
 			Function<String, BiConsumer<Value, MutableBindingSet>> getSet) {
@@ -128,6 +129,7 @@ public default Queue<BindingSet> createBindingSetQueue(Supplier<MutableBindingSe
 	/**
 	 * @return a new queue optimized for bindingsets
 	 */
+	@Experimental
 	public default Queue<BindingSet> createBindingSetQueue() {
 		Function<String, Predicate<BindingSet>> gethas = (n) -> (b) -> b.hasBinding(n);
 		Function<String, Function<BindingSet, Value>> getget = (n) -> (b) -> b.getValue(n);

core/collection-factory/mapdb3/src/main/java/org/eclipse/rdf4j/collection/factory/mapdb/MapDb3CollectionFactory.java

@@ -31,6 +31,7 @@
 import org.eclipse.rdf4j.collection.factory.api.BindingSetKey;
 import org.eclipse.rdf4j.collection.factory.api.CollectionFactory;
 import org.eclipse.rdf4j.collection.factory.impl.DefaultCollectionFactory;
+import org.eclipse.rdf4j.common.annotation.Experimental;
 import org.eclipse.rdf4j.common.exception.RDF4JException;
 import org.eclipse.rdf4j.model.Value;
 import org.eclipse.rdf4j.query.BindingSet;
@@ -260,6 +261,7 @@ public Queue<Value> createValueQueue() {
 	}
 
 	@Override
+	@Experimental
 	public Queue<BindingSet> createBindingSetQueue(Supplier<MutableBindingSet> create,
 			Function<String, Predicate<BindingSet>> getHas, Function<String, Function<BindingSet, Value>> getget,
 			Function<String, BiConsumer<Value, MutableBindingSet>> getSet) {