{"ast_node_type":"other","tokens":[{"end":59,"kind":"keyword","start":0,"text":"(self.callback)(UnsafeDiagnostic::UnsafeOperation"}]}
        (self.callback)(UnsafeDiagnostic::UnsafeOperation {
    fn on_unsafe_op(&mut self, node: ExprOrPatId, reason: UnsafetyReason) {
            node,