docs: def glance(self):  # pragma: no cover
          """
          Print itself, only display attributes defined in
          :attr:`ExtendedBase._settings_major_attrs`
          """
          if self._settings_major_attrs is None:
              msg = ("Please specify attributes you want to include "
                     "in `class._settings_major_attrs`!")
              raise NotImplementedError(msg)
  
          kwargs = [
              (attr, getattr(self, attr))
              for attr in self._settings_major_attrs
          ]
  
          text = "{classname}({kwargs})".format(
              classname=self.__class__.__name__,
              kwargs=", ".join([
                  "%s=%r" % (attr, value)
                  for attr, value in kwargs
              ])
          )
  
          print(text)