seenBy abstract method

TRes seenBy(
  1. Iterable<Mutation$sendMessageToTarget$sendMessageToTarget$seenBy>? _fn(
    1. Iterable<CopyWith$Mutation$sendMessageToTarget$sendMessageToTarget$seenBy<Mutation$sendMessageToTarget$sendMessageToTarget$seenBy>>?
    )
)

Implementation

TRes seenBy(
    Iterable<Mutation$sendMessageToTarget$sendMessageToTarget$seenBy>? Function(
            Iterable<
                CopyWith$Mutation$sendMessageToTarget$sendMessageToTarget$seenBy<
                    Mutation$sendMessageToTarget$sendMessageToTarget$seenBy>>?)
        _fn);