code: public DescribeReplicationGroupsResult withReplicationGroups(ReplicationGroup... replicationGroups) {
          if (this.replicationGroups == null) {
              setReplicationGroups(new com.amazonaws.internal.SdkInternalList<ReplicationGroup>(replicationGroups.length));
          }
          for (ReplicationGroup ele : replicationGroups) {
              this.replicationGroups.add(ele);
          }
          return this;
      }
docs: <p>
  A list of replication groups. Each item in the list contains detailed information about one replication group.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setReplicationGroups(java.util.Collection)} or {@link #withReplicationGroups(java.util.Collection)} if
  you want to override the existing values.
  </p>
  
  @param replicationGroups
  A list of replication groups. Each item in the list contains detailed information about one replication
  group.
  @return Returns a reference to this object so that method calls can be chained together.