code: public void setAvailabilityZones(java.util.Collection<AvailabilityZone> availabilityZones) {
          if (availabilityZones == null) {
              this.availabilityZones = null;
              return;
          }
  
          this.availabilityZones = new java.util.ArrayList<AvailabilityZone>(availabilityZones);
      }
docs: The list of available az.
  
  @param availabilityZones
  The list of available az.