code: public org.tensorflow.framework.ConfigProto getDefaultSessionConfig() {
      return defaultSessionConfig_ == null ? org.tensorflow.framework.ConfigProto.getDefaultInstance() : defaultSessionConfig_;
    }
docs: <pre>
  The default configuration for sessions that run on this server.
  </pre>
  
  <code>optional .tensorflow.ConfigProto default_session_config = 4;</code>