public function create($user, $repo, $title, $body = null, $assignee = null, $milestone = null, array $labels = null)
	{
		// Build the request path.
		$path = '/repos/' . $user . '/' . $repo . '/issues';

		// Ensure that we have a non-associative array.
		if (isset($labels))
		{
			$labels = array_values($labels);
		}

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

		// Send the request.
		$response = $this->client->post($this->fetchUrl($path), $data);

		// Validate the response code.
		if ($response->code != 201)
		{
			// Decode the error response and throw an exception.
			$error = json_decode($response->body);
			throw new \DomainException($error->message, $response->code);
		}

		return json_decode($response->body);
	}