def get_parameter_record(self, parameter_record_type=None):
Gets the parameter record corresponding to the given ``Parameter`` record ``Type``.

        This method is used to retrieve an object implementing the
        requested record. The ``parameter_record_type`` may be the
        ``Type`` returned in ``get_record_types()`` or any of its
        parents in a ``Type`` hierarchy where
        ``has_record_type(parameter_record_type)`` is ``true`` .

        arg:    parameter_record_type (osid.type.Type): the type of
                parameter record to retrieve
        return: (osid.configuration.records.ParameterRecord) - the
                parameter record
        raise:  NullArgument - ``parameter_record_type`` is ``null``
        raise:  OperationFailed - unable to complete request
        raise:  Unsupported - ``has_record_type(parameter_record_type)``
                is ``false``
        *compliance: mandatory -- This method must be implemented.*