docs: public void setReadReplicaDBInstanceIdentifiers(java.util.Collection<String> readReplicaDBInstanceIdentifiers) {
          if (readReplicaDBInstanceIdentifiers == null) {
              this.readReplicaDBInstanceIdentifiers = null;
              return;
          }
  
          this.readReplicaDBInstanceIdentifiers = new java.util.ArrayList<String>(readReplicaDBInstanceIdentifiers);
      }