      VertexLabel aVertexLabel = aSchema.ensureVertexLabelExist(&quot;A&quot;);</b>
<b class="fc">&nbsp;        VertexLabel bVertexLabel = bSchema.ensureVertexLabelExist(&quot;B&quot;);</b>
<b class="fc">&nbsp;        VertexLabel cVertexLabel = bSchema.ensureVertexLabelExist(&quot;C&quot;);</b>
<b class="fc">&nbsp;        EdgeLabel edgeLabel = aVertexLabel.ensureEdgeLabelExist(&quot;ab&quot;, bVertexLabel,</b>
<b class="fc">&nbsp;                EdgeDefinition.of(</b>
<b class="fc">&nbsp;                   