docs: def sqlalchemy(self, is_top=True):
          """Dumps Python code to set up the table's  SQLAlchemy model"""
          table_def = self.table_backref_remover.sub('', self.table.__repr__())
  
          # inject UNIQUE constraints into table definition
          constraint_defs = []
          for constraint in self.table.constraints:
              if isinstance(constraint, sa.sql.schema.UniqueConstraint):
                  col_list = ', '.join("'%s'" % c.name
                                       for c in constraint.columns)
                  constraint_defs.append('UniqueConstraint(%s)' % col_list)
          if constraint_defs:
              constraint_defs = ',\n  '.join(constraint_defs) + ','
              table_def = table_def.replace('schema=None', '\n  ' + constraint_defs + 'schema=None')
  
          table_def = table_def.replace("MetaData(bind=None)", "metadata")
          table_def = table_def.replace("Column(", "\n  Column(")
          table_def = table_def.replace("schema=", "\n  schema=")
          result = [table_def, ]
          result.extend(c.sqlalchemy(is_top=False) for c in self.children.values())
          result = "\n%s = %s" % (self.table_name, "\n".join(result))
          if is_top:
              sqla_imports = set(self.capitalized_words.findall(table_def))
              sqla_imports &= set(dir(sa))
              sqla_imports = sorted(sqla_imports)
              result = self.sqlalchemy_setup_template % (
                  ", ".join(sqla_imports), result, self.table.name)
              result = textwrap.dedent(result)
          return result