code: @Deprecated
      @CheckForNull
      public static <T extends Trigger> T triggerFrom(Job<?, ?> job, Class<T> tClass) {
          return triggerFrom((Item) job, tClass);
      }
docs: @param job    job to search trigger in
  @param tClass trigger with class which we want to receive from job
  @param <T>    type of trigger
  
  @return Trigger instance with required class or null
  TODO use standard method in 1.621+
  @deprecated use {@link #triggerFrom(Item, Class)}