code: public static Map.Entry<String, Map<String, ?>> hideKeyboardCommand(String strategy,
                                                                          String keyName) {
          String[] parameters = new String[]{"strategy", "key"};
          Object[] values = new Object[]{strategy, keyName};
          return new AbstractMap.SimpleEntry<>(
                  HIDE_KEYBOARD, prepareArguments(parameters, values));
      }
docs: This method forms a {@link java.util.Map} of parameters for the
  keyboard hiding.
  
  @param strategy HideKeyboardStrategy.
  @param keyName  a String, representing the text displayed on the button of the
  keyboard you want to press. For example: "Done".
  @return a key-value pair. The key is the command name. The value is a
  {@link java.util.Map} command arguments.