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<h4>combine</h4>
<pre class="methodSignature">public static&nbsp;<a href="../colgroup/AColGroup.html" title="class in org.apache.sysds.runtime.compress.colgroup">AColGroup</a>&nbsp;combine&#8203;(<a href="../colgroup/AColGroup.html" title="class in org.apache.sysds.runtime.compress.colgroup">AColGroup</a>&nbsp;a,
                                <a href="../colgroup/AColGroup.html" title="class in org.apache.sysds.runtime.compress.colgroup">AColGroup</a>&nbsp;b,
                           