{"ast_node_type":"impl","tokens":[{"end":52,"kind":"keyword","start":0,"text":"src:"}]}
        src: &impl Projectable<'tcx, M::Provenance>,
        &self,
    ) -> InterpResult<'tcx, Either<MPlaceTy<'tcx, M::Provenance>, ImmTy<'tcx, M::Provenance>>> {