return (*(iface->get_text_after_offset)) (text, offset, boundary_type, real_start_offset, real_end_offset);
return (*(iface->get_text_at_offset)) (text, offset, boundary_type, real_start_offset, real_end_offset);
return (*(iface->get_text_before_offset)) (text, offset, boundary_type, real_start_offset, real_end_offset);
return (*(iface->get_string_at_offset)) (text, offset, granularity, real_start_offset, real_end_offset);
(*(iface->get_character_extents)) (text, offset, real_x, real_y, real_width, real_height, coords);
bounds_max_offset = atk_text_get_offset_at_point (text, rect->x + rect->width, rect->y + rect->height, coord_type);