code: def new_cells(self, name=None, formula=None):
          
          # Outside formulas only
          return self._impl.new_cells(name, formula).interface
docs: Create a cells in the space.
  
          Args:
              name: If omitted, the model is named automatically ``CellsN``,
                  where ``N`` is an available number.
              func: The function to define the formula of the cells.
  
          Returns:
              The new cells.