{"ast_node_type":"other","tokens":[{"end":76,"kind":"keyword","start":0,"text":"#[derive(TyEncodable,"}]}
#[derive(TyEncodable, TyDecodable, HashStable, TypeFoldable, TypeVisitable)]
#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash)]
pub enum ProjectionElem<V, T> {