code: def alter(self, tbl_properties=None):
          
  
          def _run_ddl(**kwds):
              stmt = ddl.AlterTable(self._qualified_name, **kwds)
              return self._execute(stmt)
  
          return self._alter_table_helper(
              _run_ddl, tbl_properties=tbl_properties
          )
docs: Change setting and parameters of the table.
  
          Parameters
          ----------
          tbl_properties : dict, optional
  
          Returns
          -------
          None (for now)