osrm-backend/third_party/flatbuffers/tests/flatc/enum_val_attributes.fbs

attribute display_name;

enum ValAttributes : int
{
    Val1 = 0 (display_name: "Value 1"),
    Val2 (display_name: "Value 2"),
    Val3 (deprecated, display_name: "Value 3 (deprecated)"),
}