use icu::properties::CodePointSetData;
use icu::properties::props::Diacritic;
let diacritic = CodePointSetData::new::<Diacritic>();
assert!(diacritic.contains('\u{05B3}')); // HEBREW POINT HATAF QAMATS
assert!(!diacritic.contains('א')); // U+05D0 HEBREW LETTER ALEF