code: def downgrade():
      # ### commands auto generated by Alembic - please adjust! ###
      with op.batch_alter_table("chat_bots", schema=None) as batch_op:
          batch_op.add_column(
              sa.Column("is_running", sa.BOOLEAN(), nullable=True)
          )
          batch_op.add_column(
              sa.Column("company_id", sa.INTEGER(), nullable=True)
          )
          batch_op.add_column(
              sa.Column("user_class", sa.INTEGER(), nullable=True)
          )
          batch_op.add_column(
              sa.Column("chat_engine", sa.VARCHAR(), nullable=True)
          )
  
imports: from alembic import op
  import sqlalchemy
  import mindsdb.interfaces.storage.db
label_desc: Use image node_id 2 for calling a global function with example usage: downgrade() without return types