{"ast_node_type":"other","tokens":[{"end":86,"kind":"keyword","start":0,"text":"StatementKind::Assign(box"}]}
            StatementKind::Assign(box (place, Rvalue::Use(Operand::Constant(_)))) => {
            // ConstProp will pick up the pieces and replace them by actual constants.
                if let Some(final_locals) = self.replacements.place_fragments(place) {