@staticmethod
def _get_class(class_name):
    """
        Get a class module from its name.

        :param class_name: Full name of a class.
        :type class_name: `str`
        :return: The class `module`.
        :rtype: `module`
        """
    sub_mods = class_name.split('.')
    print(class_name)
    module_ = __import__('.'.join(sub_mods[:-1]), fromlist=sub_mods[-1])
    class_module = getattr(module_, sub_mods[-1])
    return class_module
