IFile destination, int updateFlags, IProgressMonitor monitor) {
IJavaElement element = JavaCore.create(source);
if(element == null) return false;
IType sourceType = JavaElements.getPrimaryTypeOf(element);
if(sourceType == null) return false;
TestingPair pair = new TestingPair();
String[] pairNames = pair.getPairClassNames(sourceType.getFullyQualifiedName());
List<IType> pairTypes;
try {
pairTypes = findPairTypes(pairNames);
if (pairTypes.isEmpty()) {
return false;