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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def call(self, itemMethod):
 """ Invoke the given bound item method in the batch process. Return a Deferred which fires when the method has been invoked. """

        item = itemMethod.im_self
        method = itemMethod.im_func.func_name
        return self.batchController.getProcess().addCallback(
            CallItemMethod(storepath=item.store.dbdir,
                           storeid=item.storeID,
                           method=method).do)