docs: def validate_config(self):
          """Validate that the browser config contains all the needed config
          """
  
          # LOCALHOST
          if self.location == 'localhost':
              if 'browserName' not in self.config.keys():
                  msg = "Add the 'browserName' in your local_config: e.g.: 'Firefox', 'Chrome', 'Safari'"  # noqa
                  self.runner.critical_log(msg)
                  raise BromeBrowserConfigException(msg)
  
          # EC2
          elif self.location == 'ec2':
              self.validate_ec2_browser_config()
  
          # VIRTUALBOX
          elif self.location == 'virtualbox':
              self.validate_virtualbox_config()