code: public static <E> ReadableSource<E> asSource(View<E> view) {
      return new DatasetSourceTarget<E>(view);
    }
docs: Expose the given {@link View} as a Crunch {@link ReadableSource}.
  
  @param view the view to read from
  @param <E>     the type of entity produced by the source
  @return a {@link ReadableSource} for the view
  
  @since 0.14.0