src/vs/workbench/contrib/webview/browser/dynamicWebviewEditorOverlay.ts/DynamicWebviewEditorOverlay/withWebview
class DynamicWebviewEditorOverlay:	private withWebview(f: (webview: Webview) => void): void {
		if (this._webview.value) {
			f(this._webview.value);
		}
	}