public ReplicationSpecification withRegionList(String... regionList) {
        if (this.regionList == null) {
            setRegionList(new java.util.ArrayList<String>(regionList.length));
        }
        for (String ele : regionList) {
            this.regionList.add(ele);
        }
        return this;
    }
<p>
The <code>regionList</code> can contain up to six Amazon Web Services Regions where the keyspace is replicated
in.
</p>
<p>
<b>NOTE:</b> This method appends the values to the existing list (if any). Use
{@link #setRegionList(java.util.Collection)} or {@link #withRegionList(java.util.Collection)} if you want to
override the existing values.
</p>

@param regionList
       The <code>regionList</code> can contain up to six Amazon Web Services Regions where the keyspace is
       replicated in.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-keyspaces/src/main/java/com/amazonaws/services/keyspaces/model/ReplicationSpecification.java