{"ast_node_type":"impl","tokens":[{"end":92,"kind":"keyword","start":0,"text":"//"}]}
        // impl Copy/Clone for Coroutine where T: Copy/Clone forall T in (upvars, witnesses)
        // only when `coroutine_clone` is enabled and the coroutine is movable
        ty::Coroutine(def_id, args) => match ecx.cx().coroutine_movability(def_id) {