{"ast_node_type":"other","tokens":[{"end":76,"kind":"keyword","start":0,"text":"#[derive(Copy,"}]}
#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash, TyEncodable, TyDecodable)]
/// the self type here, which contains `?A` to be `&'static u32`
#[derive(HashStable, TypeFoldable, TypeVisitable)]