/// <summary>
/// 添加服务类型为 <see cref="IAccessor"/> 的数据库上下文访问器。
/// </summary>
/// <typeparam name="TAccessor">指定派生自 <see cref="DataDbContextAccessor{TGenId, TIncremId, TCreatedBy}"/> 的访问器类型。</typeparam>
/// <param name="builder">给定的 <see cref="IDataBuilder"/>。</param>
/// <param name="setupAction">给定的 <see cref="Action{DataBuilderOptions, DbContextOptionsBuilder}"/>。</param>
/// <param name="poolSize">设置池保留的最大实例数（可选；默认为128，如果小于1，将使用 AddDbContext() 注册）。</param>
/// <returns>返回 <see cref="IDataBuilder"/>。</returns>
public static IDataBuilder AddAccessor <TAccessor>(this IDataBuilder builder,
Action <ITenant, DbContextOptionsBuilder> setupAction, int poolSize = 128)
where TAccessor : DbContext, IAccessor
=> builder.AddAccessor <IAccessor, TAccessor>(setupAction, poolSize);
