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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 _prune_components(self):
 """ Remove components for which the remote party did not provide any candidates. This can only be determined after end-of-candidates. """

        seen_components = set(map(lambda x: x.component, self._remote_candidates))
        missing_components = self._components - seen_components
        if missing_components:
            self.__log_info('Components %s have no candidate pairs' % missing_components)
            self._components = seen_components