code: public DBInstance withReadReplicaDBInstanceIdentifiers(String... readReplicaDBInstanceIdentifiers) {
          if (this.readReplicaDBInstanceIdentifiers == null) {
              setReadReplicaDBInstanceIdentifiers(new com.amazonaws.internal.SdkInternalList<String>(readReplicaDBInstanceIdentifiers.length));
          }
          for (String ele : readReplicaDBInstanceIdentifiers) {
              this.readReplicaDBInstanceIdentifiers.add(ele);
          }
          return this;
      }
docs: <p>
  Contains one or more identifiers of the Read Replicas associated with this DB instance.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setReadReplicaDBInstanceIdentifiers(java.util.Collection)} or
  {@link #withReadReplicaDBInstanceIdentifiers(java.util.Collection)} if you want to override the existing values.
  </p>
  
  @param readReplicaDBInstanceIdentifiers
  Contains one or more identifiers of the Read Replicas associated with this DB instance.
  @return Returns a reference to this object so that method calls can be chained together.