src/vs/base/browser/ui/scrollbar/scrollbarVisibilityController.ts/ScrollbarVisibilityController/_applyVisibilitySetting
class ScrollbarVisibilityController:	private _applyVisibilitySetting(): boolean {
		if (this._visibility === ScrollbarVisibility.Hidden) {
			return false;
		}
		if (this._visibility === ScrollbarVisibility.Visible) {
			return true;
		}
		return this._rawShouldBeVisible;
	}