      &quot;Person&quot;,
<b class="fc">&nbsp;                new HashMap&lt;&gt;() {{</b>
<b class="fc">&nbsp;                    put(&quot;uuid&quot;, PropertyDefinition.of(PropertyType.UUID));</b>
&nbsp;                }},
<b class="fc">&nbsp;                ListOrderedSet.listOrderedSet(List.of(&quot;uuid&quot;))</b>
&nbsp;        );
<b class="fc">&nbsp;        personVertexLabel.ensureEdgeLabelExist(</b>
&nbsp;                &quot;knows&quot;,
&nbsp;                personVertexLabel,
<b class="fc">&nbs