<node text="D.foo(self, x) (D in hierarchy.call.Static.QualifierDefinedInside.main)" base="true">
  <node text="A.__init__(self) (2 usages) (A in hierarchy.call.Static.QualifierDefinedInside.main)"/>
  <node text="B.foo(self, x) (B in hierarchy.call.Static.QualifierDefinedInside.main)">
    <node text="A.__init__(self) (A in hierarchy.call.Static.QualifierDefinedInside.main)"/>
  </node>
</node>