Available on Android, Linux, Mac, Windows, iOS
@:value(cast 2)@:impl@:enuminlineread onlyGLYPHS:HBBufferContentType = 2
@:value(cast 0)@:impl@:enuminlineread onlyINVALID:HBBufferContentType = 0
@:value(cast 1)@:impl@:enuminlineread onlyUNICODE:HBBufferContentType = 1