human
Solve the following python programming problem given the following code:
@ property 
def _creator(self) : 
    '
        Return a function object that creates a new, empty element of the
        right type, having no attributes.
        ' 
    def new_child_element(obj) : 
        return OxmlElement (self._nsptagname) 
return <MASK> 
    
    Given the code above, what is a proper replacement for <MASK>? Choose among: self
assistant
#Here is a proper replacement for <MASK>.
def new_child_element(