code: @Nullable
    public static char [] getAllCharacters (@Nullable @WillClose final Reader aReader)
    {
      if (aReader == null)
        return null;
  
      return getCopy (aReader).getAsCharArray ();
    }
docs: Read all characters from the passed reader into a char array.
  
  @param aReader
  The reader to read from. May be <code>null</code>.
  @return The character array or <code>null</code> if the reader is
  <code>null</code>.