{"ast_node_type":"other","tokens":[{"end":73,"kind":"keyword","start":0,"text":"ModItemId::Struct(ast_id)"}]}
                            ModItemId::Struct(ast_id) => ast_id.upcast(),
                        let ast_adt_id: FileAstId<ast::Adt> = match *mod_item {
                            ModItemId::Union(ast_id) => ast_id.upcast(),