returns a map like #newmap that does not accept null keys concode_field_sep PlaceHolder placeHolder concode_field_sep ObjectObjectHashMap<K,V> newMap concode_elem_sep ObjectObjectHashMap<K,V> newMap concode_elem_sep Iterable<T> intersection concode_elem_sep ObjectObjectHashMap<K,V> ensureNoNullKeys concode_elem_sep ObjectIntHashMap<V> ensureNoNullKeys
ObjectObjectHashMap < K , V > function ( ) { return ensureNoNullKeys ( 16 ) ; }