* Edit the text of the PR title to start in "imperative", like giving an order. So, instead of `Adding support for teleporting` use `Add support for teleporting`.

   * serial access, it is critical that <b>all</b> access to the backing bimap is accomplished
   * through the returned bimap.
   *
   * <p>It is imperative that the user manually synchronize on the returned map when accessing any
   * of its collection views:
   *
   * {@snippet :
   * BiMap<Long, String> map = Maps.synchronizedBiMap(HashBiMap.create());
   * ...

   * serial access, it is critical that <b>all</b> access to the backing bimap is accomplished
   * through the returned bimap.
   *
   * <p>It is imperative that the user manually synchronize on the returned map when accessing any
   * of its collection views:
   *
   * {@snippet :
   * BiMap<Long, String> map = Maps.synchronizedBiMap(HashBiMap.create());
   * ...

    *   Only create a GCS directory object if the object does not already exist.
    *   Introduce `dynamic` constructor argument in Layer and Model, which
        should be set to `True` when using imperative control flow in the `call`
        method.
    *   Begin adding Go wrapper for C Eager API.
    *   XLA HLO graphs can be inspected with interactive_graphviz tool now.