code: @Nonnull
      public Collection<? extends Action> getJobActions(J job) {
          // delegate to getJobAction (singular) for backward compatible behavior
          Action a = getJobAction(job);
          if (a==null)    return Collections.emptyList();
          return Collections.singletonList(a);
      }
docs: {@link Action}s to be displayed in the job page.
  
  <p>
  Returning actions from this method allows a job property to add them
  to the left navigation bar in the job page.
  
  <p>
  {@link Action} can implement additional marker interface to integrate
  with the UI in different ways.
  
  @param job
  Always the same as {@link #owner} but passed in anyway for backward compatibility (I guess.)
  You really need not use this value at all.
  @return
  can be empty but never null.
  @since 1.341
  @see ProminentProjectAction
  @see PermalinkProjectAction