code: def downgrade():
      # ### commands auto generated by Alembic - please adjust! ###
      op.drop_index(
          op.f("ix_table_schema_id"), table_name="table_schema"
      )
      op.drop_table("table_schema")
      op.drop_index(op.f("ix_tab_state_id"), table_name="tab_state")
      op.drop_table("tab_state")
  
imports: import sqlalchemy
  from alembic import op
  from sqlalchemy.dialects import mysql
label_desc: Use image node_id 2 for calling a global function with example usage: downgrade() without return types