code: def test_pickleable(self):
      pickle.dumps(self.table.columns["one"])
  
imports: import pickle
  import unittest
  from decimal import Decimal
  from agate import Table
  from agate.data_types import Number, Text
label_desc: Use image node_id 5 for calling the TestColumn obj's underlying member method code with example usage: obj.test_pickleable() without return types