private static final long serialVersionUID = 0;
  }

  /**
   * Returns a view of a map where each value is transformed by a function. All other properties of
   * the map, such as iteration order, are left intact. For example, the code:
   *
   * <pre>{@code
   * Map<String, Integer> map = ImmutableMap.of("a", 4, "b", 9);
   * Function<Integer, Double> sqrt =
   *     new Function<Integer, Double>() {

    private static final long serialVersionUID = 0;
  }

  /**
   * Returns a view of a map where each value is transformed by a function. All other properties of
   * the map, such as iteration order, are left intact. For example, the code:
   *
   * <pre>{@code
   * Map<String, Integer> map = ImmutableMap.of("a", 4, "b", 9);
   * Function<Integer, Double> sqrt =
   *     new Function<Integer, Double>() {

      // Adding the gradients to the graph can alter the prefix to prevent
      // name collisions only if this prefix has not been provided explicitly
      // by the user. If it was provided, assert that it remained intact.
      if (prefix != nullptr && !absl::StartsWith(n->name(), prefix_cmp)) {
        status->status = tensorflow::errors::Internal(
            "BUG: The gradients prefix have been unexpectedly altered when "