public function getRequestDataKeys()
    {
        if ($this->getType() !== self::TYPE_REQUEST) {
            return array();
        }

        if (array_key_exists('php://input', $this->mockedData)) {
            $data = $this->mockedData['php://input'];
        }
        else {
            $data = file_get_contents("php://input");
        }

        return array(
            \SwaggerValidator\Common\FactorySwagger::LOCATION_BODY  => (bool) (strlen($data) > 0),
            \SwaggerValidator\Common\FactorySwagger::LOCATION_FORM  => $this->getRequestFormDataKey(),
            \SwaggerValidator\Common\FactorySwagger::LOCATION_QUERY => $this->getRequestQueryKey(),
        );
    }