public Change() {
    setTimeStamp(now());

    composites = new ArrayList<CompositeChange>();
    semanticalDependees = new ArrayList<Change>();
    semanticalDependencies = new ArrayList<Change>();
    structuralDependees = new ArrayList<Change>();
    structuralDependencies = new ArrayList<Change>();

    UniqueID = "n" + Integer.toString(IDCounter);
    IDCounter++;
  }