arangosh&gt; <span class="hljs-keyword">var</span> graph_module = <span class="hljs-built_in">require</span>(<span class="hljs-string">"@arangodb/general-graph"</span>);
arangosh&gt; <span class="hljs-keyword">var</span> edgeDefinitions = graph_module._edgeDefinitions();
arangosh&gt; graph_module._extendEdgeDefinitions(edgeDefinitions, graph_module._relation(<span class="hljs-string">"friend_of"</span>, <span class="hljs-string">"Customer"</span>, <span class="hljs-string">"Customer"</span>));
arangosh&gt; graph_module._extendEdgeDefinitions(
........&gt; edgeDefinitions, graph_module._relation(
........&gt; <span class="hljs-string">"has_bought"</span>, [<span class="hljs-string">"Customer"</span>, <span class="hljs-string">"Company"</span>], [<span class="hljs-string">"Groceries"</span>, <span class="hljs-string">"Electronics"</span>]));
arangosh&gt; graph_module._create(<span class="hljs-string">"myStore"</span>, edgeDefinitions);
[ Graph myStore EdgeDefinitions: [ 
  <span class="hljs-string">"friend_of: [Customer] -&gt; [Customer]"</span>, 
  <span class="hljs-string">"has_bought: [Company, Customer] -&gt; [Electronics, Groceries]"</span> 
] VertexCollections: [ ] ]