code: def prepare_soap_envelope(self, prepared_soap_header, prepared_soap_body):
          
  
          # pylint: disable=bad-continuation
          soap_env_template = (
              '<?xml version="1.0"?>'
              '<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/"'
              ' s:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">'
                  '{soap_header}'
                      '<s:Body>'
                          '{soap_body}'
                      '</s:Body>'
              '</s:Envelope>')  # noqa PEP8
          return soap_env_template.format(
              soap_header=prepared_soap_header,
              soap_body=prepared_soap_body)
docs: Prepare the SOAP Envelope for sending.
  
          Args:
              prepared_soap_header (str): A SOAP Header prepared by
                  `prepare_soap_header`
              prepared_soap_body (str): A SOAP Body prepared by
                  `prepare_soap_body`
  
          Returns:
              str: A prepared SOAP Envelope