Google Maps JavaScript API v3 - 如何让getTilt（）方法返回当前的倾斜角度，而不仅仅是setTilt设置的值？

I'm working on a project using the Google Maps JavaScript API. When initializing the map, I added an if statement to add a css class if Google Maps cannot automatically show a tilted perspective. The map is initializing, but whether the map is tilted or not, I'm working on a project using the Google Maps