code: def add(self, other):
          
          if isinstance(other, SeriesWeld):
              other = other.expr
          return SeriesWeld(
              grizzly_impl.element_wise_op(
                  self.expr,
                  other,
                  "+",
                  self.weld_type
              ),
              self.weld_type,
              self.df,
              self.column_name
          )
docs: Summary
  
          Args:
              other (TYPE): Description
  
          Returns:
              TYPE: Description