code: public NodeGroupConfiguration withReplicaAvailabilityZones(String... replicaAvailabilityZones) {
          if (this.replicaAvailabilityZones == null) {
              setReplicaAvailabilityZones(new com.amazonaws.internal.SdkInternalList<String>(replicaAvailabilityZones.length));
          }
          for (String ele : replicaAvailabilityZones) {
              this.replicaAvailabilityZones.add(ele);
          }
          return this;
      }
docs: <p>
  A list of Availability Zones to be used for the read replicas. The number of Availability Zones in this list must
  match the value of <code>ReplicaCount</code> or <code>ReplicasPerNodeGroup</code> if not specified.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setReplicaAvailabilityZones(java.util.Collection)} or
  {@link #withReplicaAvailabilityZones(java.util.Collection)} if you want to override the existing values.
  </p>
  
  @param replicaAvailabilityZones
  A list of Availability Zones to be used for the read replicas. The number of Availability Zones in this
  list must match the value of <code>ReplicaCount</code> or <code>ReplicasPerNodeGroup</code> if not
  specified.
  @return Returns a reference to this object so that method calls can be chained together.