 without passing a columns argument,
        the default columns defined here will be used.

        You can also create a Progress instance using custom columns before
        and/or after the defaults, as in this example:

            progress = Progress(
                SpinnerColumn(),
                *Progress.default_columns(),
                "Elapsed:",
                TimeElapsedColumn(),
            )

        This code shows the creation of a Progress display, containing
        a spinner to the left, the default columns, and a labeled elapsed
        time column.
        r|