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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_ready(self):
 """ Returns True if all of the `required_keys` are available from any units. """

        ready = len(self.get(self.name, [])) > 0
        if not ready:
            hookenv.log('Incomplete relation: {}'.format(self.__class__.__name__), hookenv.DEBUG)
        return ready