std::vector<const Tensor*> input_tensors_vector(num_inputs, nullptr);
  // A vector to keep track of newly created `tf::Tensor` objects.
  std::vector<Tensor> all_input_tensors;
  // Update the vector with information from `input_tensors` if provided.
  if (input_tensors != nullptr) {
    // Note that we take the address of the elements in `all_input_tensors`
    // below. Allocate enough space so that no reallocation happens, which will

      exchangeFinder!!.routePlanner.hasNext(exchange?.connection)

  /**
   * Returns a string that describes this call. Doesn't include a full URL as that might contain
   * sensitive information.
   */
  private fun toLoggableString(): String =
    (
      (if (isCanceled()) "canceled " else "") +
        (if (forWebSocket) "web socket" else "call") +
        " to " + redactedUrl()
    )

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