sb.append(className);
sb.append(declaringClass);
  public String toString()  {    StringBuffer sb = new StringBuffer();    if (className != null)      {        sb.append(className);        if (methodName != null)          sb.append('.');      }    if (methodName != null)      sb.append(methodName);    sb.append(" (");    if (fileName != null)      sb.append(fileName);    else      sb.append(isNative ? "Native Method" : "Unknown Source");    if (lineNumber >= 0)      sb.append(':').append(lineNumber);    sb.append(')');    return sb.toString();  }