addStream abstract method
Adds all elements of the given
Returns a Future that completes when
all elements of the given
stream have been added.
If the stream contains an error, the
addStream ends at the error,
and the returned future completes with that error.
This method must not be called when a stream is currently being added using this method.
Individual values in the lists emitted by
stream which are not in the
range 0 .. 255 will be truncated to their low eight bits, as if by
int.toUnsigned, before being used.
Future addStream(Stream<List<int>> stream);