code: public void remove(I_CmsEditableGroupRow row) {
  
          int index = m_container.getComponentIndex(row);
          if (index >= 0) {
              m_container.removeComponent(row);
          }
          updatePlaceholder();
          updateButtonBars();
          updateGroupValidation();
      }
docs: Removes the given row.
  
  @param row the row to remove