CaptureSourceError
@objc
public enum CaptureSourceError : IntCaptureSourceError describes an error resulting from a capture source failure.
These can be used to trigger UI, or attempt to restart the capture source.
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                  Unknown error, and catch-all for errors not otherwise covered. DeclarationSwift case unknown = 0
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                  A failure observed from a system API used for capturing. DeclarationSwift case systemFailure = 1
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                  A failure observed during configuration. DeclarationSwift case configurationFailure = 2
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                  A temporary failure observed when capture source generates an invalid frame which is ignored. DeclarationSwift case invalidFrame = 3
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                  DeclarationSwift public var description: String { get }
