code: def _fill_gravs(self, mesh=None, **kwargs):
          
          logger.debug("{}._fill_gravs".format(self.component))
  
          if mesh is None:
              mesh = self.mesh
  
          # TODO: rename 'gravs' to 'gdcs' (gravity darkening corrections)
  
          gravs = ((mesh.normgrads.for_computations * g_rel_to_abs(self.masses[self.ind_self], self.sma))/self.instantaneous_gpole)**self.gravb_bol
  
          mesh.update_columns(gravs=gravs)
  
          if not self.needs_recompute_instantaneous:
              logger.debug("{}._fill_gravs: copying gravs to standard mesh".format(self.component))
              theta = 0.0
              self._standard_meshes[theta].update_columns(gravs=gravs)
docs: TODO: add documentation
  
          requires _fill_loggs to have been called