close method
Implementation
Future<void> close(SessionFooter footer) async {
if (_closed) return;
_closed = true;
await _writeAndFlush(footer.toJson());
await _sink.close();
}
Future<void> close(SessionFooter footer) async {
if (_closed) return;
_closed = true;
await _writeAndFlush(footer.toJson());
await _sink.close();
}