for (RefactoringPair pair : refactoringCandidates) {
RefactoringCandidate left = pair.getDeletedEntity();
RefactoringCandidate right = pair.getInsertedEntity();
if (!(left.isRefactoring() || right.isRefactoring())) {
refactorings.add(pair);
left.enableRefactoring();
right.enableRefactoring();
}
}
return refactorings;