It specifies an interface for a consumer to subscribe, filter notifications, and manage subscriptions and an interface for publishers to send notifications.

它为使用者指定一个用于订阅、筛选通知和管理订阅的接口，并为发布者指定一个用于发送通知的接口。

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The FT would undoubtedly prefer not only to manage such subscriptions themselves but also not to have that subscriber base known to another company.

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