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            (Deprecated: Use expires_after().) Set the stream's expiry time relative
            to now.
          
void expires_from_now( const duration & expiry_time);
            This function sets the expiry time associated with the stream. Stream
            operations performed after this time (where the operations cannot be
            completed using the internal buffers) will fail with the error asio::error::operation_aborted.
          
The expiry time to be used for the timer.