def convert_units(self, desired, guess=False):
        """
        Convert the units of the mesh into a specified unit.

        Parameters
        ----------
        desired : string
          Units to convert to (eg 'inches')
        guess : boolean
          If self.units are not defined should we
          guess the current units of the document and then convert?
        """
        units._convert_units(self, desired, guess)
        return self
Convert the units of the mesh into a specified unit.

        Parameters
        ----------
        desired : string
          Units to convert to (eg 'inches')
        guess : boolean
          If self.units are not defined should we
          guess the current units of the document and then convert?