docs: public void startEdit(
          CmsUUID itemId,
          CmsResourceTableProperty propertyId,
          I_CmsFilePropertyEditHandler editHandler) {
  
          m_editItemId = itemId;
          m_editProperty = propertyId;
          m_originalEditValue = (String)m_container.getItem(m_editItemId.toString()).getItemProperty(
              m_editProperty).getValue();
          m_editHandler = editHandler;
  
          // storing current drag mode and setting it to none to avoid text selection issues in IE11
          m_beforEditDragMode = m_fileTable.getDragMode();
          m_fileTable.setDragMode(TableDragMode.NONE);
  
          m_fileTable.setEditable(true);
      }