question: public static Collection < VisorGridEvent > collectEvents ( Ignite ignite , String evtOrderKey , String evtThrottleCntrKey , boolean all , IgniteClosure < Event , VisorGridEvent > evtMapper ) { int [ ] evtTypes = all ? VISOR_ALL_EVTS : VISOR_NON_TASK_EVTS ; if ( evtOrderKey . startsWith ( "CONSOLE_" ) ) evtTypes = concat ( evtTypes , EVTS_DISCOVERY ) ; return collectEvents ( ignite , evtOrderKey , evtThrottleCntrKey , evtTypes , evtMapper ) ; }
target:  Grabs local events and detects if events was lost since last poll.