<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def addOutParameter(self, name, type, namespace=None, element_type=0):
 """Add an output parameter description to the call info."""

        parameter = ParameterInfo(name, type, namespace, element_type)
        self.outparams.append(parameter)
        return parameter