Example possibly not accurate?

[ConfidantCommunications]

https://github.com/haxetink/tink_io/blob/gh-pages/README.md#memory-management

It seems the example code here is unfinished by accident. Or does the trace statement actually interfere with the garbage collection?

[back2dos]

It's complete, although maybe unclear. It's not the trace statement per se, but rather the fact that the handler captures a reference to the source, thereby delaying GC until the callback has fired.