OptionalallowOptionalautoOptionaldecodeOptionaldefaultOptionalemitOptionalencodingOptionalhighOptionalobjectOptionalreadableOptionalreadableOptionalsignalOptionalwritableOptionalwritableOptionalwritableOptionalconstructOptionaldestroyOptionalfinalOptionalflushOptionalreadOptionaltransformOptionalwriteOptionalwritev
When provided the corresponding
AbortControllercan be used to cancel an asynchronous action.