human
Solve the following python programming problem given the following code:
@ property 
def _list_getter(self) : 
    '
        Return a function object suitable for the "get" side of a list
        property descriptor.
        ' 
    def get_child_element_list(obj) : 
        return obj.findall (qn (self._nsptagname)) 
get_child_element_list.__doc__ = ('A list containing each of the ``<%s>`` child elements, in the order they appear.' % self._nsptagname) 
    return <MASK> 
    
    Given the code above, what is a proper replacement for <MASK>? Choose among: get_child_element_list, self
assistant
#Here is a proper replacement for <MASK>.
get_child_element_list