code: public void setIdleMaxAge(long idleMaxAge, TimeUnit timeUnit) {
  		this.idleMaxAgeInSeconds = TimeUnit.SECONDS.convert(idleMaxAge, checkNotNull(timeUnit)); 
  	}
docs: Sets Idle max age.
  
  The time, for a connection to remain unused before it is closed off. Do not use aggressive values here!
  @param idleMaxAge time after which a connection is closed off
  @param timeUnit idleMaxAge time granularity.