/**
* {@inheritdoc}
*/
public function end(string $data = '', float $timeout = 0) : \Generator
{
if (!$this->writable->isWritable()) {
throw new UnwritableException('The stream is no longer writable.');
}
try {
$written = (yield from $this->writable->end($data, $timeout));
} finally {
$this->readable->close();
}
return $written;
}
