@Override
  public String toString() {
    StringBuilder buf = new StringBuilder();
    if (myReplaceByString != null) {
      buf.append(myReplaceByString);
    }
    if (myStringToReplace != null) {
      if (buf.length() > 0) buf.append(" ");
      buf.append(myStringToReplace);
    }
    if (myExpression != null) {
      if (buf.length() > 0) buf.append(" ");
      buf.append(myExpression.getText());
    }
    return buf.toString();
  }
@Override
  public String toString()