Alternative to {@link #unsubscribe()} with additional custom headers to send to the server. <p><strong>Note:</strong> There is no need to set the subscription id. @param headers the custom headers, if any @since 5.0
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Alternative to {@link #unsubscribe()} with additional custom headers to send to the server. <p><strong>Note:</strong> There is no need to set the subscription id. @param headers the custom headers, if any @since 5.0