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				@ -7,7 +7,7 @@ public extension VisibleMessage {
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				        public var title: String?
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				        public var url: String?
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				        internal init(title: String, url: String) {
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				        internal init(title: String?, url: String) {
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				            self.title = title
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				            self.url = url
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				        }
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				@ -23,18 +23,18 @@ public extension VisibleMessage {
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				        }
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				        public static func fromProto(_ proto: SNProtoDataMessagePreview) -> LinkPreview? {
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				            guard let title = proto.title else { return nil }
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				            let title = proto.title
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				            let url = proto.url
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				            return LinkPreview(title: title, url: url)
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				        }
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				        public func toProto() -> SNProtoDataMessagePreview? {
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				            guard let title = title, let url = url else {
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				            guard let url = url else {
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				                SNLog("Couldn't construct link preview proto from: \(self).")
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				                return nil
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				            }
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				            let linkPreviewProto = SNProtoDataMessagePreview.builder(url: url)
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				            linkPreviewProto.setTitle(title)
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				            if let title = title { linkPreviewProto.setTitle(title) }
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				            do {
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				                return try linkPreviewProto.build()
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				            } catch {
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