code: public String getDescription() {
      StringBuffer buf = new StringBuffer();
      String transportName = config.getName();
      for (ProbeSender sender : senders) {
        buf.append(transportName).append(" -- ").append(isEnabled() ? "Enabled" : "Disabled")
            .append(" -- ").append(sender.getDescription());
      }
      return buf.toString();
  
    }
docs: return the text description of the transport and its associated
  ProbeSenders.
  
  @return text description (one liner)