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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 identical(self, a, b):
 """ This should return whether `a` is identical to `b`. Of course, this isn't always clear. True should mean that it is definitely identical. False eans that, conservatively, it might not be. :param a: an AST :param b: another AST """

        return self._identical(self.convert(a), self.convert(b))