picture abstract method

Implementation

TRes picture(
    Iterable<Mutation$sendMessageToTarget$sendMessageToTarget$messageGroup$lastMessage$media$picture>? Function(
            Iterable<
                CopyWith$Mutation$sendMessageToTarget$sendMessageToTarget$messageGroup$lastMessage$media$picture<
                    Mutation$sendMessageToTarget$sendMessageToTarget$messageGroup$lastMessage$media$picture>>?)
        _fn);