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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 _is_defaultexit_direct_jump(self):
 """ Checks if the default of this IRSB a direct jump or not. """

        if not (self.jumpkind == 'Ijk_InvalICache' or self.jumpkind == 'Ijk_Boring' or self.jumpkind == 'Ijk_Call'):
            return False

        target = self.default_exit_target
        return target is not None