question: public void record ( int time_sec ) { this . count ++ ; this . total_time_sec += time_sec ; if ( this . min_time_sec < 0 ) this . min_time_sec = time_sec ; else this . min_time_sec = Math . min ( this . min_time_sec , time_sec ) ; this . max_time_sec = Math . max ( this . max_time_sec , time_sec ) ; }
target:  Record one execution instance time. Later we might want to add more metrics for example, rows_read, etc