{"ast_node_type":"other","tokens":[{"end":56,"kind":"keyword","start":0,"text":"chalk_ir::VariableKind::Lifetime"}]}
        chalk_ir::VariableKind::Lifetime => find_var(iv)
            .map_or(default, |i| BoundVar::new(binder, i).to_ty(Interner).cast(Interner)),
            .map_or(default, |i| BoundVar::new(binder, i).to_lifetime(Interner).cast(Interner)),