c[d.group]}&#x000A;      stroke_style {|d| c[d.group].darker()}&#x000A;    <span style="color:#080;font-weight:bold">end</span>&#x000A;    &#x000A;    node_label.label&#x000A;  <span style="color:#080;font-weight:bold">end</span>&#x000A;<span style="color:#080;font-weight:bold">end</span>&#x000A;vis.render();&#x000A;puts vis.to_svg</pre></div>
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