code: private List<Object[]> _getFieldDebugInfos(final String field)
      {
          Map<String, List<Object[]>> debugInfo = _getDebugInfoMap();
          List<Object[]> fieldDebugInfo = debugInfo.get(field);
          if (fieldDebugInfo == null)
          {
              // no field debug-infos yet, create them and store it in the Map
              fieldDebugInfo = new ArrayList<Object[]>();
              debugInfo.put(field, fieldDebugInfo);
          }
          return fieldDebugInfo;
      }
docs: Returns the field's debug-infos from the component's debug-info Map.
  @param field
  @return