ssert.assertEquals(1, this.sqlgGraph.traversal().E().hasLabel(&quot;ab&quot;).count().next(), 0);</b>
<b class="fc">&nbsp;        Assert.assertEquals(1, this.sqlgGraph.traversal().V().hasLabel(&quot;A&quot;).outE(&quot;ab&quot;).count().next(), 0);</b>
<b class="fc">&nbsp;        Assert.assertEquals(1, this.sqlgGraph.traversal().V().hasLabel(&quot;A&quot;).out(&quot;ab&quot;).count().next(), 0);</b>
&nbsp;        try {
<b class="fc">&nbsp;            this.sqlgGraph.addVertex(T.label, &quot;A&quot;, &quot;na