@Test(expected = NullPointerException.class)
public void withTargetClassMethodShouldThrowNpeWhenTargetClassIsNull() {

	// Given
	String key = "testKey";
	String value = "testValue";
	
	String url = "test";
	HttpMethod method = HttpMethod.GET;
	VolleyerConfiguration configuration = DefaultVolleyerConfigurationFactory.create();
	TestPurposeRequestBuilder builder = new TestPurposeRequestBuilder(requestQueue, configuration, url, method);
	Class<?> clazz = null;
	// When & Then
	builder.withTargetClass(clazz);
}