docs: def add_break(self, break_type=WD_BREAK.LINE):
          """
          Add a break element of *break_type* to this run. *break_type* can
          take the values `WD_BREAK.LINE`, `WD_BREAK.PAGE`, and
          `WD_BREAK.COLUMN` where `WD_BREAK` is imported from `docx.enum.text`.
          *break_type* defaults to `WD_BREAK.LINE`.
          """
          type_, clear = {
              WD_BREAK.LINE:             (None,           None),
              WD_BREAK.PAGE:             ('page',         None),
              WD_BREAK.COLUMN:           ('column',       None),
              WD_BREAK.LINE_CLEAR_LEFT:  ('textWrapping', 'left'),
              WD_BREAK.LINE_CLEAR_RIGHT: ('textWrapping', 'right'),
              WD_BREAK.LINE_CLEAR_ALL:   ('textWrapping', 'all'),
          }[break_type]
          br = self._r.add_br()
          if type_ is not None:
              br.type = type_
          if clear is not None:
              br.clear = clear