TF_Output* parent_inputs = params->cond_graph->parent_inputs;
  int num_loop_vars = params->ninputs;

  mutex_lock l(parent->mu);

  // 'cond_fn' copies the cond graph into the parent graph.
  tensorflow::ops::CondGraphBuilderFn cond_fn =
      [params, parent](const tensorflow::Scope& scope,
                       const std::vector<tensorflow::Output>& inputs,

                      old Fury:
                     "I'll
                      try the
                         whole
                          cause,
                             and
                        condemn
                       you
                      to
                       death."'


  `You are not attending!' said the Mouse to Alice severely.
`What are you thinking of?'

                      old Fury:
                     "I'll
                      try the
                         whole
                          cause,
                             and
                        condemn
                       you
                      to
                       death."'


  `You are not attending!' said the Mouse to Alice severely.
`What are you thinking of?'