另一方面，单个类可以实现多个接口。

For another, a single class can implement multiple interfaces.

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如果没有指定安全许可，则没有许可检查，所有调用方都允许调用接口和操作。

If no security permission is specified, no permissions are checked and all callers are permitted to call the interface or operation.

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SAML 标准提供了允许第三方实体请求验证和授权信息的接口。

The SAML standard provides interfaces that allow third parties to send their requests for authentication and authorization.

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