{"ast_node_type":"other","tokens":[{"end":75,"kind":"keyword","start":0,"text":"self.r.arenas.alloc_macro_rules_binding(MacroRulesBinding"}]}
                self.r.arenas.alloc_macro_rules_binding(MacroRulesBinding {
            let scope = self.r.arenas.alloc_macro_rules_scope(MacroRulesScope::Binding(
                    parent_macro_rules_scope: parent_scope.macro_rules,