ance-diagram-container", label="Defn[U]", id="graph1_0", class="this class", tooltip="provingground.Context.Defn (this class)"] ;
}
  
  
  
}
  
  
  node1 [label="Product", id="graph1_1", class="default", tooltip="scala.Product"] ;
  node2 [label="Serializable", id="graph1_2", class="default", tooltip="java.io.Serializable"] ;
  node1 -> node0 [arrowtail="empty", dir="back", id="graph1_1_0", class="inheritance", tooltip="Defn[U] is a subtype of Product"] ;node2 -> node0 [arrowtail="empty", dir="back", id=