/**
   * get Matched Virtual Pools For Pool. This is called to calculate supported vpools during
   * unmanaged objects discovery
   *
   * @param poolUri
   * @return
   */
  public static StringSet getMatchedVirtualPoolsForPool(
      DbClient dbClient, URI poolUri, String isThinlyProvisionedUnManagedObject) {
    StringSet vpoolUriSet = new StringSet();
    // We should match all virtual pools as below:
    // 1) Virtual pools which have useMatchedPools set to true and have the storage pool in their
    // matched pools
    // 2) Virtual pools which have the storage pool in their assigned pools

    URIQueryResultList vpoolMatchedPoolsResultList = new URIQueryResultList();
    dbClient.queryByConstraint(
        ContainmentConstraint.Factory.getMatchedPoolVirtualPoolConstraint(poolUri),
        vpoolMatchedPoolsResultList);
    List<VirtualPool> vPoolsMatchedPools =
        dbClient.queryObject(VirtualPool.class, vpoolMatchedPoolsResultList);
    String provisioningTypeUnManagedObject =
        UnManagedVolume.SupportedProvisioningType.getProvisioningType(
            isThinlyProvisionedUnManagedObject);
    StoragePool storagePool = dbClient.queryObject(StoragePool.class, poolUri);
    for (VirtualPool vPool : vPoolsMatchedPools) {
      if (!VirtualPool.vPoolSpecifiesHighAvailability(vPool)) {
        List<StoragePool> validPools = VirtualPool.getValidStoragePools(vPool, dbClient, true);
        for (StoragePool sPool : validPools) {
          if (sPool.getId().equals(storagePool.getId())
              && provisioningTypeUnManagedObject.equalsIgnoreCase(
                  vPool.getSupportedProvisioningType())) {
            vpoolUriSet.add(vPool.getId().toString());
            break;
          }
        }
      }
    }

    return vpoolUriSet;
  }
 /**
  * * Check if the request is for vplex.
  *
  * @param volume
  * @return
  */
 private boolean isVplex(Volume volume) {
   boolean isVplex = false;
   VirtualPool vpool = dbClient.queryObject(VirtualPool.class, volume.getVirtualPool());
   isVplex = VirtualPool.vPoolSpecifiesHighAvailability(vpool);
   return isVplex;
 }