@Test(expected = IllegalStateException.class)
public void withTargetClassMethodShouldThrowIllegalStateExceptionWhenSetTargetClassMethodIsCalledAgain() {

	// Given
	String url = "test";
	HttpMethod method = HttpMethod.GET;
	VolleyerConfiguration configuration = DefaultVolleyerConfigurationFactory.create();
	TestPurposeRequestBuilder builder = new TestPurposeRequestBuilder(requestQueue, configuration, url, method);
	Class<String> clazz = String.class;
	// When
	builder.withTargetClass(clazz);
	// Then
	builder.withTargetClass(clazz);
}