human
Solve the following python programming problem given the following code:
def flat_field(fn) : 
    def getter(item) : 
        return unicode ((fn (item) or '')) 
return fluff.FlatField (fn) 

    
    

    Fix the buggy line: return fluff.FlatField (fn)
assistant
#Here is Python code to fix the buggy line: return fluff.

return fluff.FlatField (def getter()