Method traverse

crates/vm/src/frame.rs:485–488

(&self, tracer_fn: &mut TraverseFn<'_>)

unsafe impl Traverse for LocalsPlus {
    fn traverse(&self, tracer_fn: &mut TraverseFn<'_>) {
        self.fastlocals().traverse(tracer_fn);
        self.stack_as_slice().traverse(tracer_fn);
    }
}

/// Lazy locals dict for frames. For NEWLOCALS frames, the dict is