<?xml version='1.0' encoding='utf-8'?>
<graphml xmlns="http://graphml.graphdrawing.org/xmlns" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://graphml.graphdrawing.org/xmlns http://graphml.graphdrawing.org/xmlns/1.0/graphml.xsd">
  <key attr.name="mybool" attr.type="boolean" for="graph" id="d0" />
  <graph edgedefault="undirected">
    <data key="d0">True</data>
  </graph>
</graphml>
