code: public void setMaxBrowserInstances(String browserName, int maxBrowserInstances) {
          logger.entering(new Object[] { browserName, maxBrowserInstances });
          validateBrowserName(browserName);
          BrowserStatistics lStatistics = createStatisticsIfNotPresent(browserName);
          lStatistics.setMaxBrowserInstances(maxBrowserInstances);
          logger.exiting();
      }
docs: Sets the maximum instances for a particular browser. This call creates a unique statistics for the provided
  browser name it does not exists.
  
  @param browserName
  Name of the browser.
  @param maxBrowserInstances
  Maximum instances of the browser.