### Question:
JsEventListenerBodyBuilder { public JsParameterCollectorBuilder startCollectingParameters(String parameters) { return new JsParameterCollectorBuilder(parameters, this); } JsEventListenerBodyBuilder(String event, JsArriveHandlerBuilder parent); JsParameterCollectorBuilder startCollectingParameters(String parameters); JsEventListenerBodyBuilder notifyBromium(String parameters); JsArriveHandlerBuilder endListener(); JsEventListenerBodyBuilder write(String string);  }### Answer:
@Test public void canStartCollectingParameters() { String trailingString = "});\n"; JsArriveHandlerBuilder jsArriveHandlerBuilder = mock(JsArriveHandlerBuilder.class); JsEventListenerBodyBuilder jsEventListenerBodyBuilder = new JsEventListenerBodyBuilder(trailingString, jsArriveHandlerBuilder); assertNotNull(jsEventListenerBodyBuilder.startCollectingParameters("something")); }