public Integer getVarDataKey(FieldType type)
   {
      Integer result = null;
      FieldItem item = m_map.get(type);
      if (item != null)
      {
         result = item.getVarDataKey();
      }
      return result;
   }
public Integer getVarDataKey ( FieldType type ) { Integer result = null ; FieldItem item = m_map . get ( type ) ; if ( item != null ) { result = item . getVarDataKey ( ) ; } return result ; }
Retrieve the var data key for a specific field.

@param type field type
@return var data key