public String getId() {
    if (id == null || id.isEmpty()) {
      return id;
    }
    String pn = ClientProxyMembershipID.getPoolName();
    if (pn != null) {
      poolName = pn;
    }
    String result = id;
    if (poolName != null) {
      result += poolSeparator + poolName;
    }
    return result;
  }
Returns the durable client's id.

@return the durable client's id
geode-core/src/main/java/org/apache/geode/distributed/DurableClientAttributes.java