gGraph.tx().rollback();</b>
<b class="fc">&nbsp;        a = this.sqlgGraph.addVertex(T.label, &quot;A&quot;);</b>
<b class="fc">&nbsp;        b = this.sqlgGraph.addVertex(T.label, &quot;B&quot;);</b>
<b class="fc">&nbsp;        a.addEdge(&quot;ab&quot;, b);</b>
<b class="fc">&nbsp;        a.addEdge(&quot;ab&quot;, b);</b>
<b class="fc">&nbsp;        this.sqlgGraph.tx().checkMultiplicity(a, Direction.OUT, ab, bVertexLabel);</b>
<b class="fc">&nbsp;        this.sqlgGraph.tx().checkMultiplicity(aVertexLabel, D