Analyze request config and find which
        request method will be used.

        Returns request method in upper case

        This method needs simetime when `process_config` method
        was not called yet.

def detect_request_method(self):
        """
        Analyze request config and find which
        request method will be used.

        Returns request method in upper case

        This method needs simetime when `process_config` method
        was not called yet.
        """

        method = self.config['method']
        if method:
            method = method.upper()
        else:
            if self.config['post'] or self.config['multipart_post']:
                method = 'POST'
            else:
                method = 'GET'
        return method