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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 _choice_getter(self):
 """ Return a function object suitable for the "get" side of the property descriptor. """

        def get_group_member_element(obj):
            return obj.first_child_found_in(*self._member_nsptagnames)
        get_group_member_element.__doc__ = (
            'Return the child element belonging to this element group, or '
            '|None| if no member child is present.'
        )
        return get_group_member_element