https://developers.google.cn/cast/docs/reference/ios/protocol_g_c_k_session_manager_listener-p
GCKSessionManagerListener Protocol | Cast | Google for Developers
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https://developers.google.com/cast/docs/reference/ios/protocol_g_c_k_session_manager_listener-p?hl=tr
GCKSessionManagerListener Protokol | Cast | Google for Developers
protokolcastgoogledevelopers