{"ast_node_type":"other","tokens":[{"end":52,"kind":"keyword","start":0,"text":".map_or(FlatSet::Top,"}]}
                    .map_or(FlatSet::Top, |layout| {
                    .layout_of(self.typing_env.as_query_input(ty))
                        FlatSet::Elem(ImmTy::from_scalar(scalar, layout))