code: public DescribeReplicationSubnetGroupsResult withReplicationSubnetGroups(ReplicationSubnetGroup... replicationSubnetGroups) {
          if (this.replicationSubnetGroups == null) {
              setReplicationSubnetGroups(new java.util.ArrayList<ReplicationSubnetGroup>(replicationSubnetGroups.length));
          }
          for (ReplicationSubnetGroup ele : replicationSubnetGroups) {
              this.replicationSubnetGroups.add(ele);
          }
          return this;
      }
docs: <p>
  A description of the replication subnet groups.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setReplicationSubnetGroups(java.util.Collection)} or
  {@link #withReplicationSubnetGroups(java.util.Collection)} if you want to override the existing values.
  </p>
  
  @param replicationSubnetGroups
  A description of the replication subnet groups.
  @return Returns a reference to this object so that method calls can be chained together.