src/main/java/com/workplacesystems/utilsj/collections/decorators/SynchronizedBidiMap.java
public static <K,V> BidiMap<K,V> decorate(BidiMap<K,V> map) {
        return new SynchronizedBidiMap<K,V>(map);
    }
public static <K,V> BidiMap<K,V> decorate(BidiMap<K,V> map) {
        return new SynchronizedBidiMap<K,V>(map);
    }
Factory method to create a synchronized map.

@param map  the map to decorate, must not be null
@throws IllegalArgumentException if map is null