[deprecation] newInstance() in Class has been deprecated

[MdAshrafUllah]

warning: [deprecation] newInstance() in Class has been deprecated
FlutterMediationExtras flutterExtras = (FlutterMediationExtras) cls.newInstance();
^
where T is a type-variable:
T extends Object declared in class Class
1 warning

[malandr2]

Hi @MdAshrafUllah, thank you for flagging. The engineering is aware of this and will work on a fix prior to the next release.