Return the specific methods of the class

            :param class_name: the class name of the method
            :type class_name: string
            :param method_name: the name of the method
            :type method_name: string

            :rtype: None or a :class:`EncodedMethod` object

def get_methods_descriptor(self, class_name, method_name):
        """
            Return the specific methods of the class

            :param class_name: the class name of the method
            :type class_name: string
            :param method_name: the name of the method
            :type method_name: string

            :rtype: None or a :class:`EncodedMethod` object
        """
        l = []
        for i in self.classes.class_def:
            if i.get_name() == class_name:
                for j in i.get_methods():
                    if j.get_name() == method_name:
                        l.append(j)

        return l