code: protected CharSequence getData()
          throws EFapsException
      {
          final StringBuilder js = new StringBuilder();
          js.append("{ id: 'root', name: 'You cannot see this one.'}");
          final IClassificationFilter filter = (IClassificationFilter) getDefaultModelObject();
          final Field field = Field.get(filter.getFieldId());
          final String[] names = field.getClassificationName().split(";");
          for (final String className : names) {
              final Classification clazz = Classification.get(className);
              js.append(getDataLine(clazz, filter));
          }
          return js;
      }
docs: Gets the data.
  
  @return the data
  @throws EFapsException the e faps exception