def METHOD_NAME():
    # ### commands auto generated by Alembic - please adjust! ###
    op.drop_table("cluster_to_groups")
    op.drop_table("clusters")
    # ### end Alembic commands ###
    op.execute("DROP TYPE IF EXISTS clustertype")
    op.execute("DROP TRIGGER IF EXISTS cluster_modification on clusters;")
    op.execute("DROP FUNCTION set_cluster_to_owner_group() CASCADE")