--- src/main/java/org/apache/commons/collections4/NavigableSetValuedMap.java (revision 1760292) +++ src/main/java/org/apache/commons/collections4/NavigableSetValuedMap.java (working copy) @@ -16,36 +16,37 @@ */ package org.apache.commons.collections4; -import java.util.Set; +import java.util.NavigableSet; /** * Defines a map that holds a set of values against each key. *
- * A {@code SetValuedMap} is a Map with slightly different semantics: + * A {@code NavigableSetValuedMap} is a Map with slightly different semantics: *
- * Implementations typically return an empty {@code Set} if no values + * Implementations typically return an empty {@code NavigableSet} if no values * have been mapped to the key. *
*
* @param key the key to retrieve
- * @return the {@code Set} of values, implementations should return an
- * empty {@code Set} for no mapping
+ * @return the {@code NavigableSet} of values, implementations should return an
+ * empty {@code NavigableSet} for no mapping rather than {@code null}.
* @throws NullPointerException if the key is null and null keys are invalid
*/
@Override
- Set