{"ast_node_type":"other","tokens":[{"end":63,"kind":"keyword","start":0,"text":"extern_module_map:"}]}
    extern_module_map: RefCell<FxIndexMap<DefId, Module<'ra>>>,
    /// Lazily populated cache of modules loaded from external crates.
    binding_parent_modules: FxHashMap<NameBinding<'ra>, Module<'ra>>,