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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 block(self, *args, **kwargs):
 """ Represent the basic block at this state's instruction pointer. Any arguments to `AngrObjectFactory.block` can ba passed to this. :return: A Block object describing the basic block of code at this point. """

        if not args and 'addr' not in kwargs:
            kwargs['addr'] = self.addr
        return self.project.factory.block(*args, backup_state=self, **kwargs)