public void add(EntityPath aPath) { if (nextEntityPath == null) nextEntityPath = aPath; else nextEntityPath.add(aPath);
public void add(String aColumnName) { pathToEntity.add(aColumnName);
  public void add(EntityPath aPath) {    if (nextEntityPath == null)       nextEntityPath = aPath;    else      nextEntityPath.add(aPath);  }