old_contents: __author__ = 'karl.gong'
  
  from .exceptions import UnsupportedOperationForWebDriver
  
  
  def SupportedBy(*web_driver_types):
      def handle_func(func):
          def handle_args(*args, **kwargs):
              wd_types = []
              for wd_type in web_driver_types:
                  wd_types += wd_type
  
              current_web_driver_type = args[0].get_web_driver().get_web_driver_type()
              if current_web_driver_type not in wd_types:
                  raise UnsupportedOperationForWebDriver(
                      "The operation is not supported in web driver [%s]." % current_web_driver_type)
  
              return func(*args, **kwargs)
  
          return handle_args
  
      return handle_func
  
new_contents: __author__ = 'karl.gong'
  
  from .exceptions import UnsupportedOperationForWebDriver
  
  
  def SupportedBy(*web_driver_types):
      def handle_func(func):
          def handle_args(*args, **kwargs):
              wd_types = []
              for wd_type in web_driver_types:
                  if isinstance(wd_type, list):
                      wd_types += wd_type
                  else:
                      wd_types += [wd_type]
  
              current_web_driver_type = args[0].get_web_driver().get_web_driver_type()
              if current_web_driver_type not in wd_types:
                  raise UnsupportedOperationForWebDriver(
                      "The operation is not supported in web driver [%s]." % current_web_driver_type)
  
              return func(*args, **kwargs)
  
          return handle_args
  
      return handle_func
  
subject: Fix SupportedBy issue.