a href="../colgroup/indexes/IColIndex.html" title="interface in org.apache.sysds.runtime.compress.colgroup.indexes">IColIndex</a>&nbsp;idx,
                                                <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/List.html?is-external=true" title="class or interface in java.util" class="externalLink">List</a>&lt;<a href="../colgroup/AColGroup.html" title="class in org.apache.sysds.runtime.compress.colgroup">AColGroup</a>&gt;&nbsp;groups)</pre>
</li>
</u