code: public static Map.Entry<String, Map<String, ?>> networkSpeedCommand(
              NetworkSpeed networkSpeed) {
          return new AbstractMap.SimpleEntry<>(NETWORK_SPEED,
                  prepareArguments("netspeed", networkSpeed.name().toLowerCase()));
      }
docs: This method forms a {@link Map} of parameters for the element
  value replacement. It is used against input elements
  
  @param networkSpeed One of possible NETWORK_SPEED values
  
  @return a key-value pair. The key is the command name. The value is a {@link Map} command arguments.