Function python_module_binding_unmutated_at_bounded 

pub fn python_module_binding_unmutated_at_bounded(
    root: Node<'_>,
    source: &str,
    name: &str,
    reference: Node<'_>,
    scope_step: impl FnMut() -> bool,
) -> Option<bool>

Stateless callers share the same complete collector and read evaluator.