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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_method_serializers(self, http_method):
 """Get request method serializers + default media type. Grab serializers from ``method_serializers`` if defined, otherwise returns the default serializers. Uses GET serializers for HEAD requests if no HEAD serializers were specified. The method also determines the default media type. :param http_method: HTTP method as a string. :returns: Tuple of serializers and default media type. """

        if http_method == 'HEAD' and 'HEAD' not in self.method_serializers:
            http_method = 'GET'

        return (
            self.method_serializers.get(http_method, self.serializers),
            self.default_method_media_type.get(
                http_method, self.default_media_type)
        )