Comment indicates side effect in method where none exists

[zellidev0]

In the option.dart file a comment suggests that the code below the comment has side effects.

// PURISTS BEWARE: side effecty stuff below -- proceed with caution!

One Method there is the toNullable() method.

It looks like that:

A? toNullable() => fold(() => null, id);

This method does not seem to create a side effect and therefore it should be above the stated comment to avoid confusion.

I would create a PR that moves the method upwords, so that it is above the comment. Would this PR be merged?