HB_BUFFER_SERIALIZE_FLAG_DEFINED

const HB_BUFFER_SERIALIZE_FLAG_DEFINED = [HB_BUFFER_SERIALIZE_FLAG_NO_CLUSTERS, HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS, HB_BUFFER_SERIALIZE_FLAG_NO_GLYPH_NAMES, HB_BUFFER_SERIALIZE_FLAG_GLYPH_EXTENTS, HB_BUFFER_SERIALIZE_FLAG_GLYPH_FLAGS, HB_BUFFER_SERIALIZE_FLAG_NO_ADVANCES];