Google\Cloud\Dev\Snippet\Parser\Parser::methodExample PHP Method

    public function methodExample($class, $method, $index = 0)
    {
        $examples = $this->examplesFromMethod($class, $method);
        $result = array_filter($examples, function ($example) use($index) {
            return $example->index() === $index;
        });
        if (empty($result)) {
            throw new \Exception(sprintf('Given snippet index %d does not exist for method %s::%s', $index, $class, $method));
        }
        return current($result);
    }