lse: otherwise</dd></dl>
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<h4>HierarchicalBCEngine</h4>
<pre>public&nbsp;HierarchicalBCEngine()</pre>
<div class="block">SimpleConstructor
 If we want to instantiate the class first, and if information for
 nodes and edges is not available. However, we would have to manually
 provide all the information later on by calling setNodesEdges and
 setNodeSize methods</div>
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