import { MigrationsBuilder } from "https://deno.land/x/dropserver_app@v0.2.1/migrations.ts";
Add a "down" migration.
x/dropserver_app/migrations.ts>MigrationsBuilder#downFrom
import { MigrationsBuilder } from "https://deno.land/x/dropserver_app@v0.2.1/migrations.ts";
Add a "down" migration.