signature {
      name: "cond_true"
      input_arg {
        name: "cond_true_arg0"
        type: DT_FLOAT
      }
      input_arg {
        name: "cond_true_arg1"
        type: DT_FLOAT
      }
      input_arg {
        name: "cond_true_arg2"
        type: DT_FLOAT
      }
      input_arg {
        name: "cond_true_arg3"
        type: DT_FLOAT
      }
      output_arg {