code: def from_char(
              cls, char, name=None, width=None, fill_char=None,
              bounce=False, reverse=False, back_char=None, wrapper=None):
          
          return cls(
              cls._generate_move(
                  char,
                  width=width or cls.default_width,
                  fill_char=str(fill_char or cls.default_fill_char),
                  bounce=bounce,
                  reverse=reverse,
                  back_char=back_char,
              ),
              name=name,
              wrapper=wrapper or cls.default_wrapper,
          )
docs: Create progress bar frames from a "moving" character.
              The frames simulate movement of the character, from left to
              right through empty space (`fill_char`).
  
              Arguments:
                  char           : Character to move across the bar.
                  name           : Name for the new BarSet.
                  width          : Width of the progress bar.
                                   Default: 25
                  fill_char      : Character to fill empty space.
                                   Default: ' ' (space)
                  bounce         : Whether the frames should simulate a bounce
                                   from one side to another.
                                   Default: False
                  reverse        : Whether the character should start on the
                                   right.
                                   Default: False
                  back_char  : Character to use when "bouncing" backward.
                                   Default: `char`