src/vs/platform/accessibility/common/accessibilityService.ts/AccessibilityService/setAccessibilitySupport
class AccessibilityService:	setAccessibilitySupport(accessibilitySupport: AccessibilitySupport): void {
		if (this._accessibilitySupport === accessibilitySupport) {
			return;
		}

		this._accessibilitySupport = accessibilitySupport;
		this._onDidChangeScreenReaderOptimized.fire();
	}