{"ast_node_type":"other","tokens":[{"end":99,"kind":"keyword","start":0,"text":"path:"}]}
                path: LangItem::FormatPlaceholder.path(self.db, self.module.krate()).map(Box::new),
            self.alloc_expr_desugared(Expr::RecordLit {
                fields: Box::new([position, flags, precision, width]),