code: def validate(opts):
      
      if hasattr(opts, 'wrapper') and isinstance(opts.wrapper, str):
          return _validate(opts.wrapper)
      elif isinstance(opts, str):
          return _validate(opts)
      else:
          raise ValueError("Argument passed into wrapper validation must either "
                           "be a single (non-Unicode) string, or a namespace "
                           "with an attribute of 'wrapper'")
docs: Client-facing validate method. Checks to see if the passed int opts
      argument is either a string or a namespace containing the attribute
      'wrapper' and runs validations on it accordingly.
  
      Note: this function currently does NOT support Unicode/Byte style strings,
      will need to do some work on Python 2/Python 3 compatibililty to add this
      in.
  
      :param opts: either a string or a namespace with the attribute 'extensions'
      :raises ValueError: if the value passed in is not a string or a namespace
          with the attribute 'wrapper'
      :raises ValidationException: if the wrapper fail validations
      :return: True if wrapper passes the validations