pub trait CheckingRule<Split: SplitStrategy>: CheckerRule {
// Required methods
fn applicable(
&self,
checker: &CheckRef<'_, '_, Split>,
term: &Term,
tp: &Term,
) -> bool;
fn apply<'t>(
&self,
checker: CheckRef<'t, '_, Split>,
term: &'t Term,
tp: &'t Term,
) -> Option<bool>;
}