{"ast_node_type":"other","tokens":[{"end":70,"kind":"keyword","start":0,"text":"ty::ConstKind::Value(cv)"}]}
                ty::ConstKind::Value(cv) => return Ok(Ok(cv.valtree)),
                // old-style simd_shuffle (passing as argument instead of as a generic param).
                other => span_bug!(constant.span, "{other:#?}"),