me&quot;, &quot;b&quot;);</b>
<b class="fc">&nbsp;            Vertex b = this.sqlgGraph.addVertex(T.label, &quot;B&quot;, &quot;name&quot;, &quot;b&quot;);</b>
<b class="fc">&nbsp;            a.addEdge(&quot;ab&quot;, b, &quot;name&quot;, &quot;b&quot;);</b>
<b class="fc">&nbsp;            this.sqlgGraph.tx().commit();</b>
<b class="nc">&nbsp;        } catch (Exception e) {</b>
<b class="nc">&nbsp;            failure = true;</b>
<b class="nc">&nbsp;            this.sqlgGraph.tx().rollback();</b>
&nbsp;     