Lv_theme_apply (v8.0)

line 45 say than param name exist , but in function it does not exist;
previous it was void lv_theme_apply(lv_obj_t * obj, lv_theme_style_t name) , what is alternative for 8.0 , how i can set my custom style name ?))

previous i used this - lv_theme_apply(volumeSettingsButton, (lv_theme_style_t)SETTINGS_IMG_BUTTON_THEME); - what i must use now ?)