code: def type(self):
      return self._type
  
imports: from dataclasses import dataclass
  from typing import List, Optional, Tuple
  from evadb.catalog.catalog_type import ColumnType, NdArrayType
  from evadb.parser.select_statement import SelectStatement
  from evadb.parser.statement import AbstractStatement
  from evadb.parser.table_ref import TableInfo
  from evadb.parser.types import StatementType
label_desc: Use image node_id 4 for calling the ColumnDefinition obj's underlying member method code with example usage: obj.type() and returns: self