{"ast_node_type":"other","tokens":[{"end":70,"kind":"keyword","start":0,"text":"UnwrapUnsafeBinder(..)"}]}
            UnwrapUnsafeBinder(..) => todo!("FIXME(unsafe_binders):"),
            Subtype(ty) => crate::mir::ProjectionElem::Subtype(ty.stable(tables, cx)),
        }