, C, C]", id="graph1_1", class="default", tooltip="provingground.induction.IterFuncPtnMap"] ;
  node2 [label="Product", id="graph1_2", class="default", tooltip="scala.Product"] ;
  node3 [label="Serializable", id="graph1_3", class="default", tooltip="java.io.Serializable"] ;
  node1 -> node0 [arrowtail="empty", dir="back", id="graph1_1_0", class="inheritance", tooltip="IdIterPtnMap[O, C] is a subtype of IterFuncPtnMap[O, C, O, C, C]"] ;node2 -> node0 [arrowtail="empty", dir="back", id="graph1_2_0", class="i