code: public void setVal(String val) {
  
          if (CmsStringUtil.isNotEmptyOrWhitespaceOnly(val)) {
              m_value = val.trim();
          } else {
              m_value = val;
          }
      }
docs: Sets the name for the optional attribute that provides direct access to the content value map.<p>
  
  @param val the name for the optional attribute that provides direct access to the content value map