human
Solve the following python programming problem given the following code:
@ modifies_instrumentation_finders 
def test_customfinder_pass(self) : 
    class A (object) : 
        pass 
def find(cls) : 
        return None 
instrumentation.instrumentation_finders.insert (0, self) 
    register_class (A) 
    eq_ (type (manager_of_class (A)), instrumentation.ClassManager) 

    
    

    Fix the buggy line: instrumentation.instrumentation_finders.insert (0, self)
assistant
#Here is Python program to fix the buggy line: instrumentation.

instrumentation.instrumentation_finders.insert (0, def find()