/guava/guava/src/com/google/common/collect/HashBiMap.java
insert( newEntry, delegate) ;insert( newEntry, null) ;
insert ( newEntry, null ) ;
delete(oldEntryForKey); insert(newEntry, oldEntryForKey); oldEntryForKey.prevInKeyInsertionOrder = null; oldEntryForKey.nextInKeyInsertionOrder = null; return oldEntryForKey.value; } else { <extra_id_0> rehashIfNecessary(); return null; } } @CanIgnoreReturnValue @Override