def METHOD_NAME(self):
    num_lines, num_chars, column_width = self._find_optimal_seq_chunking()
    # display entire sequence if we can, else display the first two and
    # last two lines separated by ellipsis
    if num_lines <= 5:
        self._lines.add_lines(self._format_chunked_seq(
            range(num_lines), num_chars, column_width))
    else:
        self._lines.add_lines(self._format_chunked_seq(
            range(2), num_chars, column_width))
        self._lines.add_line('...')
        self._lines.add_lines(self._format_chunked_seq(
            range(num_lines - 2, num_lines), num_chars, column_width))