buffer.append("DMDServiceQuery{mime=");
buffer.append("DMDServiceOffer{provider="); buffer.append(provider_class_); buffer.append(",mime=");
  public String toString()  {    StringBuffer buffer = new StringBuffer();        buffer.append("DMDServiceQuery{mime=");    buffer.append(mime_type_);    buffer.append(",mapping=");    buffer.append(name_mapping_);    buffer.append(",method=");    buffer.append(io_method_);    buffer.append(",mode=");    buffer.append(io_mode_);        return buffer.toString();  }  