@:value(cast 2)@:enum@:implinlineread onlyCHARACTERS:HBBufferClusterLevel = 2
@:value(cast 0)@:enum@:implinlineread onlyDEFAULT:HBBufferClusterLevel = 0
@:value(cast 1)@:enum@:implinlineread onlyMONOTONE_CHARACTERS:HBBufferClusterLevel = 1
@:value(cast 0)@:enum@:implinlineread onlyMONOTONE_GRAPHEMES:HBBufferClusterLevel = 0