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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 save_config(self, lookup_key, config):
 """Save a configuration to the cache of configs. Args: lookup_key: A string containing the cache lookup key. config: The dict containing the configuration to save to the cache. """

    with self._config_lock:
      self._configs[lookup_key] = config