Lv_disp_buf_t In Version 8.0

Hello I fiddle
now with Arduino and lvgl and I have the Problem that in lvgl Version 8 lv_disp_buf_tis not available anymore

Use:

static lv_disp_draw_buf_t draw_buf;
static lv_color_t buf1[screenWidth * 113];
lv_disp_draw_buf_init(&draw_buf, buf1, NULL, screenWidth * 113);

/*Initialize the display*/
  static lv_disp_drv_t disp_drv;
  lv_disp_drv_init(&disp_drv);
  disp_drv.hor_res = screenWidth;
  disp_drv.ver_res = screenHeight;
  disp_drv.flush_cb = my_disp_flush;
  disp_drv.draw_buf = &draw_buf;
  lv_disp_drv_register(&disp_drv);

Thank you Miguel