## Object Hierarchy

        GBoxed
        ├── hb_blob_t
        ├── hb_buffer_t
        ├── hb_face_t
        ├── hb_feature_t
        ├── hb_font_funcs_t
        ├── hb_font_t
        ├── hb_glyph_info_t
        ├── hb_glyph_position_t
        ├── hb_segment_properties_t
        ├── hb_set_t
        ├── hb_shape_plan_t
        ├── hb_unicode_funcs_t
        ╰── hb_user_data_key_t
        GEnum
        ├── hb_buffer_cluster_level_t
        ├── hb_buffer_content_type_t
        ├── hb_buffer_serialize_format_t
        ├── hb_direction_t
        ├── hb_memory_mode_t
        ├── hb_ot_layout_glyph_class_t
        ├── hb_ot_math_constant_t
        ├── hb_ot_math_kern_t
        ├── hb_script_t
        ├── hb_unicode_combining_class_t
        ╰── hb_unicode_general_category_t
        GFlags
        ├── hb_buffer_diff_flags_t
        ├── hb_buffer_flags_t
        ├── hb_buffer_serialize_flags_t
        ├── hb_glyph_flags_t
        ╰── hb_ot_math_glyph_part_flags_t