public function create($user, $repo, $issueId, $body)
	{
		// Build the request path.
		$path = '/repos/' . $user . '/' . $repo . '/issues/' . (int) $issueId . '/comments';

		// Build the request data.
		$data = json_encode(
			array(
				'body' => $body,
			)
		);

		// Send the request.
		return $this->processResponse(
			$this->client->post($this->fetchUrl($path), $data),
			201
		);
	}