529   PyDiagnosticHandler *pyHandler =  in attachDiagnosticHandler()  local
532       py::cast(pyHandler, py::return_value_policy::take_ownership);  in attachDiagnosticHandler()
543     auto *pyHandler = static_cast<PyDiagnosticHandler *>(userData);  in attachDiagnosticHandler()  local
550         result = py::cast<bool>(pyHandler->callback(pyDiagnostic));  in attachDiagnosticHandler()
554         pyHandler->hadError = true;  in attachDiagnosticHandler()
562     auto *pyHandler = static_cast<PyDiagnosticHandler *>(userData);  in attachDiagnosticHandler()  local
563     assert(pyHandler->registeredID && "handler is not registered");  in attachDiagnosticHandler()
564     pyHandler->registeredID.reset();  in attachDiagnosticHandler()
568         py::cast(pyHandler, py::return_value_policy::reference);  in attachDiagnosticHandler()
572   pyHandler->registeredID = mlirContextAttachDiagnosticHandler(  in attachDiagnosticHandler()
573       get(), handlerCallback, static_cast<void *>(pyHandler), deleteCallback);  in attachDiagnosticHandler()