setNickName method
Implementation
Future<CrChangeNickName> setNickName(String userID, String nickName) async {
final Map data = await CrImpl.instance.setNickName(userID, nickName);
final String userId = data["userID"];
final String newName = data["newName"];
final int sdkErr = data["sdkErr"];
final CrChangeNickName changeNickName =
CrChangeNickName(userId: userId, newName: newName, sdkErr: sdkErr);
return changeNickName;
}