public function checkSummaries() {
		$need_summaries = array();

		foreach ( $this->service['operations'] as $method => $info ) {
			if ( ! isset( $info['summary'] ) ) {
				$need_summaries[] = $method;
			}
		}

		if ( ! empty( $need_summaries ) ) {

			echo PHP_EOL;
			echo 'Please set summaries for all operations to generate docs.' . PHP_EOL;
			echo 'The following operations are missing a \'summary\' value in service.php:' . PHP_EOL;

			foreach ( $need_summaries as $method ) {
				echo '	' . $method . PHP_EOL;
			}

			echo PHP_EOL;

			exit;

		}
	}