/guava/guava/src/com/google/common/collect/Synchronized.java
entrySet = typePreservingSet( delegate( ).elementSet( ) , o) ;
entrySet = typePreservingSet ( delegate ( ) .entrySet ( ) , mutex ) ;
} } @Override public Set<Multiset.Entry<E>> entrySet() { synchronized (mutex) { if (entrySet == null) { <extra_id_0> } return entrySet; } } @Override public boolean equals(@CheckForNull Object o) {