Allows addition of behaviour to the disable operation.
允许在禁用组件的同时加入特定的行为。
Therefore, for performance reasons, you might be tempted to disable all diagnostics during normal operation of the system.
因此，出于性能方面的原因，您可能希望在系统正常运行期间禁用所有诊断功能。
A power failure during the firmware writing operation will disable the camera.
固件写入过程中断电将使相机无法使用。
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