code: @Nonnull
    @ReturnsMutableCopy
    public static IHasInputStream create (@Nonnull final NonBlockingByteArrayOutputStream aBAOS)
    {
      ValueEnforcer.notNull (aBAOS, "BAOS");
      return new HISNBBAOS (aBAOS);
    }
docs: Get a special implementation of {@link IHasInputStream} for
  {@link NonBlockingByteArrayOutputStream}.
  
  @param aBAOS
  Source stream. May not be <code>null</code>.
  @return Never <code>null</code>.
  @since .2.1