Return all fields of a specific class

            :param class_name: the class name
            :type class_name: string

            :rtype: a list with :class:`EncodedField` objects

def get_fields_class(self, class_name):
        """
            Return all fields of a specific class

            :param class_name: the class name
            :type class_name: string

            :rtype: a list with :class:`EncodedField` objects
        """
        l = []
        for i in self.classes.class_def:
            for j in i.get_fields():
                if class_name == j.get_class_name():
                    l.append(j)

        return l