/guava/android/guava/src/com/google/common/collect/Synchronized.java
if ( ( elementSet) == null) {   elementSet = typePreservingSet( delegate( ).elementSet( ) , mutex) ; }
[Delete]
return delegate().forcePut(key, value); } } @Override public BiMap<V, K> inverse() { synchronized (mutex) { <extra_id_0> inverse = new SynchronizedBiMap<>(delegate().inverse(), mutex, this); } return inverse; } } private static final long serialVersionUID = 0;