question: protected final void enableRetransmissionTimer ( int tickCount ) { if ( isInviteTransaction ( ) && ( this instanceof SIPClientTransaction ) ) { retransmissionTimerTicksLeft = tickCount ; } else { retransmissionTimerTicksLeft = Math . min ( tickCount , MAXIMUM_RETRANSMISSION_TICK_COUNT ) ; } retransmissionTimerLastTickCount = retransmissionTimerTicksLeft ; retransmissionOutdatedTime = SystemClock . elapsedRealtime ( ) + retransmissionTimerTicksLeft * BASE_TIMER_INTERVAL ; }
target:  Enables retransmission timer events for this transaction to begin after the number of ticks passed to this routine.