{"ast_node_type":"other","tokens":[{"end":88,"kind":"keyword","start":0,"text":"#[derive(Copy,"}]}
#[derive(Copy, Clone, TyEncodable, TyDecodable, Debug, PartialEq, Eq, Hash, HashStable)]
/// Describes what kind of retag is to be performed.
#[rustc_pass_by_value]