use icu::properties::CodePointSetData;
use icu::properties::props::ChangesWhenUppercased;
let changes_when_uppercased = CodePointSetData::new::<ChangesWhenUppercased>();
assert!(changes_when_uppercased.contains('ւ')); // U+0582 ARMENIAN SMALL LETTER YIWN
assert!(!changes_when_uppercased.contains('Ւ')); // U+0552 ARMENIAN CAPITAL LETTER YIWN