findNameByValue method
查找字典名称 根据字典分组代码和值查找对应的字典名称
Implementation
Future<String?> findNameByValue(String groupCode, String? value,
{bool useCache = true, String systemDic = "1"}) async {
var result = await findDictEntity(groupCode, value,
useCache: useCache, systemDic: systemDic);
return result?.dicName;
}