code: def fromMathInfo(self, mathInfo, guidelines=True):
          
          return self._fromMathInfo(mathInfo, guidelines=guidelines)
docs: Replaces the contents of this info object with the contents of ``mathInfo``.
  
              >>> font.fromMathInfo(mg)
  
          ``mathInfo`` must be an object following the
          `MathInfo protocol <https://github.com/typesupply/fontMath>`_.