code: public void setVPCs(java.util.Collection<VPC> vPCs) {
          if (vPCs == null) {
              this.vPCs = null;
              return;
          }
  
          this.vPCs = new com.amazonaws.internal.SdkInternalList<VPC>(vPCs);
      }
docs: <p>
  A complex type that contains information about the VPCs that are associated with the specified hosted zone.
  </p>
  
  @param vPCs
  A complex type that contains information about the VPCs that are associated with the specified hosted
  zone.