create a record key , with the given name and metadata . concode_field_sep PlaceHolder placeHolder concode_field_sep Record $$ concode_elem_sep Record $$ concode_elem_sep Record $$ concode_elem_sep ValidRecordKey<T> $V concode_elem_sep ValidRecordKey<T> $V concode_elem_sep Key<T> $ concode_elem_sep Key<T> $ concode_elem_sep ListKey<T> $L concode_elem_sep ListKey<T> $L concode_elem_sep MapKey<T> $M concode_elem_sep MapKey<T> $M concode_elem_sep Key<T> key concode_elem_sep Key<T> key
RecordKey function ( String arg0 , Value ... arg1 ) { return RecordKey . named ( arg0 , arg1 ) ; }