Jso response = Jso.deserialize(serializedResponse);
Jso request = response.getJsObjectField("request").cast();
Jso result = response.getJsObjectField("result").cast();
OnAllCssStyleSheetsResponse parsedResponse =
DebuggerChromeApiUtils.parseOnAllCssStyleSheetsResponse(result);
assertNotNull(parsedResponse);
JsonArray<CssStyleSheetHeader> headers = parsedResponse.getHeaders();
assertNotNull(headers);
assertEquals(1, headers.size());
CssStyleSheetHeader header = headers.get(0);
assertFalse(header.isDisabled());