void function ( ) { }
indicates that all elements have been pushed . if the sink isstateful , it should send any stored state downstream at this time , and should clear any accumulated state and associated resources . prior to this call , the sink must be in the active state , and after this call it is returned to the initial state . concode_field_sep Sink<? super E_OUT> downstream concode_field_sep void begin concode_elem_sep void begin concode_elem_sep void begin concode_elem_sep void begin concode_elem_sep void begin concode_elem_sep boolean cancellationRequested concode_elem_sep boolean cancellationRequested concode_elem_sep boolean cancellationRequested concode_elem_sep boolean cancellationRequested concode_elem_sep boolean cancellationRequested concode_elem_sep void accept concode_elem_sep void accept concode_elem_sep void accept concode_elem_sep void accept concode_elem_sep void accept concode_elem_sep void accept concode_elem_sep void accept concode_elem_sep void accept concode_elem_sep void accept