code: private String getString(String valueKey) {
  
          String realKey = m_entity.getTypeName() + "/" + valueKey;
          CmsEntityAttribute attr = m_entity.getAttribute(realKey);
          if (attr == null) {
              return "";
          } else {
              return attr.getSimpleValue();
          }
      }
docs: Gets a string-valued attribute from this accessor's entity.<p>
  
  @param valueKey the key
  @return the attribute value