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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 _check(self):
 """Check if the access token is expired or not."""

        import time

        if self.expires_in is None or self.authenticated is None:
            return False

        current = time.time()
        expire_time = self.authenticated + self.expires_in

        return expire_time > current