@Override
    public void fillInToString(StringBuilder sb) {
      super.fillInToString(sb);
      sb.append("; id=").append(Id);
      sb.append("; remoteDSName=").append(remoteDSId);
      sb.append("; isRunning=").append(isRunning);
      sb.append("; isPrimary=").append(isPrimary);
    }
I need this boolean to make sure the sender which is volunteer for primary is running. not
running sender should not become primary.
geode-core/src/main/java/org/apache/geode/internal/cache/wan/GatewaySenderAdvisor.java