/guava/android/guava/src/com/google/common/collect/Synchronized.java
return delegate( ).removeFirstOccurrence( obj) ;
return delegate ( ) .removeFirstOccurrence ( o ) ;
return delegate().peekLast(); } } @Override public boolean removeFirstOccurrence(@CheckForNull Object o) { synchronized (mutex) { <extra_id_0> } } @Override public boolean removeLastOccurrence(@CheckForNull Object o) { synchronized (mutex) { return delegate().removeLastOccurrence(o);