fn common_path_predicates(
lhs: &BTreeMap<PathPredicate, bool>,
rhs: &BTreeMap<PathPredicate, bool>,
) -> BTreeMap<PathPredicate, bool>fn common_path_predicates(
lhs: &BTreeMap<PathPredicate, bool>,
rhs: &BTreeMap<PathPredicate, bool>,
) -> BTreeMap<PathPredicate, bool>