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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 build_model_name(cls, name='modelName', output_name='output'):
 """ Build an output model name parameter. :param name: model name :type name: str :param output_name: bind output port name :type output_name: str :return: output description :rtype: ParamDef """

        obj = cls(name)
        obj.exporter = 'generate_model_name'
        obj.output_name = output_name
        return obj