{"ast_node_type":"other","tokens":[{"end":56,"kind":"keyword","start":0,"text":"#[derive(HashStable,"}]}
#[derive(HashStable, Lift, TypeFoldable, TypeVisitable)]
#[derive(Copy, Clone, PartialEq, Eq, Hash, Debug, TyEncodable, TyDecodable)]
pub struct Instance<'tcx> {