code: public static Map.Entry<String, Map<String, ?>> unlockDeviceCommand() {
          return new AbstractMap.SimpleEntry<>(UNLOCK, ImmutableMap.of());
      }
docs: This method forms a {@link java.util.Map} of parameters for the
  device unlocking.
  
  @return a key-value pair. The key is the command name. The value is a
  {@link java.util.Map} command arguments.