human
Solve the following python programming problem given the following code:
@ classmethod 
def associate_with(cls, sqltype) : 
    'Associate this wrapper with all future mapped columns
        of the given type.

        This is a convenience method that calls
        ``associate_with_attribute`` automatically.

        .. warning::

           The listeners established by this method are *global*
           to all mappers, and are *not* garbage collected.   Only use
           :meth:`.associate_with` for types that are permanent to an
           application, not with ad-hoc types else this will cause unbounded
           growth in memory usage.

        ' 
    def listen_for_type(mapper, class_) : 
        for prop in mapper.column_attrs : 
            if isinstance (prop.columns [0].type, sqltype) : 
                cls.associate_with_attribute (getattr (class_, prop.key)) 
event.listen (mapper, 'mapper_configured', sqltype) 

    
    

    Fix the buggy line: event.listen (mapper, 'mapper_configured', sqltype)
assistant
#Here is Python code to fix the buggy line: event.

event.listen (mapper, 'mapper_configured', def listen_for_type()