code: def parse_sas_token(sas_token):
      
      sas_data = {}
      token = sas_token.partition(' ')[2]
      fields = token.split('&')
      for field in fields:
          key, value = field.split('=', 1)
          sas_data[key.lower()] = value
      return sas_data
docs: Parse a SAS token into its components.
  
      :param sas_token: The SAS token.
      :type sas_token: str
      :rtype: dict[str, str]