Add missing since tags.
git-svn-id: https://svn.apache.org/repos/asf/commons/proper/collections/trunk@1479400 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/src/main/java/org/apache/commons/collections4/bidimap/UnmodifiableBidiMap.java b/src/main/java/org/apache/commons/collections4/bidimap/UnmodifiableBidiMap.java
index 5faa550..e785578 100644
--- a/src/main/java/org/apache/commons/collections4/bidimap/UnmodifiableBidiMap.java
+++ b/src/main/java/org/apache/commons/collections4/bidimap/UnmodifiableBidiMap.java
@@ -52,6 +52,7 @@
* @param map the map to decorate, must not be null
* @return an unmodifiable BidiMap
* @throws IllegalArgumentException if map is null
+ * @since 4.0
*/
public static <K, V> BidiMap<K, V> unmodifiableBidiMap(final BidiMap<K, V> map) {
if (map instanceof Unmodifiable) {
diff --git a/src/main/java/org/apache/commons/collections4/bidimap/UnmodifiableOrderedBidiMap.java b/src/main/java/org/apache/commons/collections4/bidimap/UnmodifiableOrderedBidiMap.java
index 9f8d7df..64e92fd 100644
--- a/src/main/java/org/apache/commons/collections4/bidimap/UnmodifiableOrderedBidiMap.java
+++ b/src/main/java/org/apache/commons/collections4/bidimap/UnmodifiableOrderedBidiMap.java
@@ -52,6 +52,7 @@
* @param map the map to decorate, must not be null
* @return an unmodifiable OrderedBidiMap
* @throws IllegalArgumentException if map is null
+ * @since 4.0
*/
public static <K, V> OrderedBidiMap<K, V> unmodifiableOrderedBidiMap(final OrderedBidiMap<K, V> map) {
if (map instanceof Unmodifiable) {
diff --git a/src/main/java/org/apache/commons/collections4/bidimap/UnmodifiableSortedBidiMap.java b/src/main/java/org/apache/commons/collections4/bidimap/UnmodifiableSortedBidiMap.java
index 4462f0f..9d0353c 100644
--- a/src/main/java/org/apache/commons/collections4/bidimap/UnmodifiableSortedBidiMap.java
+++ b/src/main/java/org/apache/commons/collections4/bidimap/UnmodifiableSortedBidiMap.java
@@ -54,6 +54,7 @@
* @param map the map to decorate, must not be null
* @return an unmodifiable SortedBidiMap
* @throws IllegalArgumentException if map is null
+ * @since 4.0
*/
public static <K, V> SortedBidiMap<K, V> unmodifiableSortedBidiMap(final SortedBidiMap<K, V> map) {
if (map instanceof Unmodifiable) {
