// Test null valued
ImageAssetReference testString = testInstance.getOverURL();
assertNull("The test string should be null", testString);
// Test specific value
final ImageAssetReferenceMock overURL =
new ImageAssetReferenceMock("overURL",
expectations);
testInstance.setOverURL(overURL);
testString = testInstance.getOverURL();
assertNotNull("The test string should not be null", testString);
assertEquals("The strings should be the same",