The user’s personal iCloud Photo Stream.
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case albumMyPhotoStream = 100
This album is available only if the user has enabled My Photo Stream in the iCloud settings for Photos. The My Photo Stream setting is off by default when iCloud Photo Library is enabled.
An iCloud Shared Photo Stream.
This documentation contains preliminary information about an API or technology in development. This information is subject to change, and software implemented according to this documentation should be tested with final operating system software.