docs: private void initLowerRightComponent() {
  
          initAddKeyInput();
  
          Component addKeyButton = createAddKeyButton();
          HorizontalLayout addKeyWrapper = new HorizontalLayout(addKeyButton);
          addKeyWrapper.setComponentAlignment(addKeyButton, Alignment.MIDDLE_CENTER);
          addKeyWrapper.setHeight("100%");
          addKeyWrapper.setWidth(CmsMessageBundleEditorTypes.OPTION_COLUMN_WIDTH_PX);
  
          FormLayout inputForm = new FormLayout(m_addKeyInput);
          inputForm.setWidth("100%");
          HorizontalLayout lowerRight = new HorizontalLayout();
          lowerRight.setWidth("100%");
          lowerRight.addComponent(inputForm);
          lowerRight.addComponent(addKeyWrapper);
          lowerRight.setExpandRatio(inputForm, 1f);
          m_lowerRightComponent = lowerRight;
  
      }