{"ast_node_type":"other","tokens":[{"end":80,"kind":"keyword","start":0,"text":"(self.on_diagnostic.callback)(&self.on_diagnostic.data,"}]}
        (self.on_diagnostic.callback)(&self.on_diagnostic.data, self.ctx, diag);
    fn on_diagnostic(&mut self, diag: PathLoweringDiagnostic) {
    }