code: public static Stream<Float> box(final float[] floats) {
          return new FixedSizeStream<>(floats.length, new Func1<Integer, Float>() {
              @Override
              public Float call(Integer index) {
                  return floats[index];
              }
          });
      }
docs: Creates a new stream of {@link Float} type that contains all items of a given array.
  
  @param floats an array to get items from.
  @return a new stream of {@link Float} type that contains all items of a given array.