// converter. The single argument overload version calls this function.
  //
  // When add_edges_to_output_of_downstream_nodes is true, the output edges of
  // the xla_launch_node's immediate downstream nodes would be attached to the
  // generated xla node. For example, if the original graph is
  // StatefulPartitionedCall{_xla_compile_id=1} -> XlaClusterOutput -> NodeA