code: def GetSOAPEnvUri(self, version):
          
          attrname = 'NS_SOAP_ENV_%s' % join(split(version, '.'), '_')
          value = getattr(self, attrname, None)
          if value is not None:
              return value
          raise ValueError(
              'Unsupported SOAP version: %s' % version
              )
docs: Return the appropriate SOAP envelope uri for a given
             human-friendly SOAP version string (e.g. '1.1').