String oldWriteFormat = myWriteFormat;
String oldWriteFormat = getWriteFormat();
  public void setWriteFormat(String _writeFormat) {    String oldWriteFormat = myWriteFormat;    myWriteFormat = (String) _nullIfPrototyped(EOAttribute.WRITE_FORMAT, _writeFormat);    firePropertyChange(EOAttribute.WRITE_FORMAT, oldWriteFormat, getWriteFormat());  }