code: public boolean isMultiple()
          throws EFapsException
      {
          final boolean ret;
          if (this.valueSelect == null) {
              ret = this.fromSelect.getMainOneSelect().isMultiple(this.currentObject);
          } else {
              ret = this.objectList.size() > 1;
          }
          return ret;
      }
docs: Method to determine if this OneSelect does return more than one value.
  @return true if more than one value is returned, else false
  @throws EFapsException on error