public void WatchConnectivityState(ChannelState lastObservedState, Timespec deadline, CompletionQueueSafeHandle cq,
CompletionRegistry completionRegistry, BatchCompletionDelegate callback)
{
var ctx = BatchContextSafeHandle.Create();
completionRegistry.RegisterBatchCompletion(ctx, callback);
grpcsharp_channel_watch_connectivity_state(this, lastObservedState, deadline, cq, ctx);
}