{"ast_node_type":"other","tokens":[{"end":73,"kind":"keyword","start":0,"text":"//"}]}
            // See librustc_body/transform/coroutine.rs for more details.
            // It effectively only contains upvars until the coroutine transformation runs.
            ty::Coroutine(_, args) => self.open_drop_for_tuple(args.as_coroutine().upvar_tys()),