class_docstr: schema_info.
class_docstr_tok: ["schema_info","."]
code: def get_col_type(self, index):
      assert index < self._size
      return self._cols[index].col_type
  
imports: import threading
  import copy
  from enum import Enum, auto
  from typing import List, Tuple, Union, Dict, Optional
  from collections import deque, namedtuple
label_desc: Use image node_id 6 for calling the _Schema obj's underlying member method code with example usage: obj.get_col_type(index) and returns: self