MappedPassOutType  143 Source/wtf/HashMap.h         MappedPassOutType take(KeyPeekInType); // efficient combination of get with remove
MappedPassOutType  428 Source/wtf/HashMap.h     typename HashMap<T, U, V, W, X, Y>::MappedPassOutType
MappedPassOutType  434 Source/wtf/HashMap.h         MappedPassOutType result = MappedTraits::passOut(it->value);