@:value(cast 2)@:enum@:implinlineread onlyGLYPHS:HBBufferContentType = 2
@:value(cast 0)@:enum@:implinlineread onlyINVALID:HBBufferContentType = 0
@:value(cast 1)@:enum@:implinlineread onlyUNICODE:HBBufferContentType = 1