docs: public void processStackCall(Op op, long timeStart) {
          //StackTraceElement stack[] = Thread.currentThread().getStackTrace();
  
          long timeSpent = (System.nanoTime() - timeStart) / 1000;
  
          /*
             basically we want to unroll stack trace for few levels ABOVE nd4j classes
             and update invocations list for last few levels, to keep that stat on few levels
           */
  
          methodsAggregator.incrementCount(timeSpent);
      }