{"ast_node_type":"other","tokens":[{"end":72,"kind":"keyword","start":0,"text":"///"}]}
    /// A mapping from [`hir_expand::MacroDefId`] to [`crate::MacroId`].
    derive_helpers_in_scope: FxHashMap<AstId<ast::Item>, Vec<(Name, MacroId, MacroCallId)>>,
    pub macro_def_to_macro_id: FxHashMap<ErasedAstId, MacroId>,