code: def downgrade():
      """Unapply Add custom_operator_name column"""
      with op.batch_alter_table(TABLE_NAME) as batch_op:
          batch_op.drop_column("custom_operator_name")
  
imports: from __future__ import annotations
  import sqlalchemy
  from alembic import op
label_desc: Use image node_id 2 for calling a global function with example usage: downgrade() without return types