String dataName = (String) i.next();
if (!dataName.endsWith(ID_DATA_NAME))
continue;
SimpleData sd = data.getSimpleValue(dataName);
if (sd != null && taskListID.equals(sd.format())) {
String taskListName = dataName.substring(
MAIN_DATA_PREFIX.length(),
dataName.length() - ID_DATA_NAME.length() - 1);
if (EVTaskListData.exists(data, taskListName)
|| EVTaskListRollup.exists(data, taskListName))