Converts the given representation value and sets the specified
        attribute value to the converted value.

        :param attr: Attribute to set.
        :param str repr_value: String value of the attribute to set.

def set_terminal_converted(self, attr, repr_value):
        """
        Converts the given representation value and sets the specified
        attribute value to the converted value.

        :param attr: Attribute to set.
        :param str repr_value: String value of the attribute to set.
        """
        value = self.converter_registry.convert_from_representation(
                                                            repr_value,
                                                            attr.value_type)
        self.data[attr.repr_name] = value