code: def downgrade():
      # ### commands auto generated by Alembic - please adjust! ###
      op.drop_table("commit_tag")
      op.drop_table("tf_summary_logs")
      op.drop_table("tags")
      op.drop_table("commits")
  
imports: from alembic import op
  import sqlalchemy
label_desc: Use image node_id 2 for calling a global function with example usage: downgrade() without return types