code: def big_endian(original_class):
      
      orig_init = original_class.__init__
  
      def __init__(self, *args, **kwargs):
          orig_init(self, *args, **kwargs)
          self.endian = "big"
  
      original_class.__init__ = __init__
      return original_class
docs: The big_endian function is a class decorator for classes derived from
      :class:`.StructTemplate`. By default a StructTemplate class interpretes its
      fields in little endian format. Using this decorator you change this
      behavior.
  
      :param original_class: The class you want to turn into a big endian
                             structure.