code: public static void appendPrettyHexDump(final StringBuilder dump, final DirectBuffer buffer)
      {
          appendPrettyHexDump(dump, buffer, 0, buffer.capacity());
      }
docs: Appends the prettified multi-line hexadecimal dump of the specified {@link DirectBuffer} to the specified
  {@link StringBuilder} that is easy to read by humans.
  
  @param dump   where should we append string representation of the buffer
  @param buffer dumped buffer