use icu::properties::CodePointSetData;
use icu::properties::props::ChangesWhenLowercased;
let changes_when_lowercased = CodePointSetData::new::<ChangesWhenLowercased>();
assert!(changes_when_lowercased.contains('Ⴔ')); // U+10B4 GEORGIAN CAPITAL LETTER PHAR
assert!(!changes_when_lowercased.contains('ფ')); // U+10E4 GEORGIAN LETTER PHAR