human
Solve the following python programming problem given the following code:
@ withActionContext 
def test_addCallbacksErrbackToDeferred(self) : 
    "
        L{DeferredContext.addCallbacks} passes the given errback and its
        corresponding arguments to the wrapped L{Deferred}'s
        C{addCallbacks}.
        " 
    called = [] 
    def f(value, x, y) : 
        value.trap (RuntimeError) 
        called.append ((x, y)) 
result = Deferred () 
    context = DeferredContext (self) 
    context.addCallbacks ((lambda x : None), f, None, None, (1,), { 
        'y' : 2, 
}) 
    result.errback (RuntimeError ()) 
    self.assertEqual (called, [(1, 2)]) 

    
    

    Fix the buggy line: context = DeferredContext (self)
assistant
#Here is Python program to fix the buggy line: context = DeferredContext (self)
.

context = DeferredContext (result)