docs: public void setReplicationSubnetGroups(java.util.Collection<ReplicationSubnetGroup> replicationSubnetGroups) {
          if (replicationSubnetGroups == null) {
              this.replicationSubnetGroups = null;
              return;
          }
  
          this.replicationSubnetGroups = new java.util.ArrayList<ReplicationSubnetGroup>(replicationSubnetGroups);
      }