code: private void addFormatter(CmsJspContentAccessValueWrapper formatterItem) {
  
          I_CmsXmlContentValue val = formatterItem.getContentValue();
          if (val instanceof CmsXmlDisplayFormatterValue) {
              CmsXmlDisplayFormatterValue value = (CmsXmlDisplayFormatterValue)val;
              String type = value.getDisplayType();
              CmsUUID formatterId = value.getFormatterId();
              if (formatterId != null) {
                  m_displayFormatterIds.put(type, formatterId);
              }
          }
      }
docs: Adds a formatter.<p>
  
  @param formatterItem the formatter value