interface UnderlyingSink
optional
abort: UnderlyingSinkAbortCallbackoptional
close: UnderlyingSinkCloseCallbackoptional
start: UnderlyingSinkStartCallbackoptional
type: undefinedoptional
write: UnderlyingSinkWriteCallback<W>abort: UnderlyingSinkAbortCallbackclose: UnderlyingSinkCloseCallbackstart: UnderlyingSinkStartCallbacktype: undefinedwrite: UnderlyingSinkWriteCallback<W>