docs: public synchronized PerformanceMonitor createPerformanceMonitor(String name) {
          PerformanceMonitor performanceMonitor = findPerformanceMonitor(name);
  
          if (performanceMonitor == null) {
              performanceMonitor = new PerformanceMonitor();
              addPerformanceMonitorToMap(name, performanceMonitor);
          }
          return performanceMonitor;
      }