public Repository(Pgres db) => Db = db;
public static IDataCommand <TraderaUser, Seller> Sellers(Pgres db) => new Sellers(db);
public Sellers(Pgres ctx) : base(ctx) { }
public static IRepository <Account, Guid> Accounts(Pgres db) => new Accounts(db);
public Accounts(Pgres ctx) : base(ctx) { }