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<pre>@SerializedName(value="subscriber")
public final&nbsp;<a href="../../../../com/spotify/protocol/types/Empty.html" title="class in com.spotify.protocol.types">Empty</a> subscriber</pre>
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<h4>caller</h4>
<pre>@SerializedName(value="caller")
public final&nbsp;<a href="../../../../com/spotify/protocol/types/Empty.html" title="class in com.spotify.p