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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def add_request_log_fields( self, log_fields: LogFields, call_details: Union[grpc.HandlerCallDetails, grpc.ClientCallDetails] ):
 """Add log fields related to a request to the provided log fields :param log_fields: log fields instance to which to add the fields :param call_details: some information regarding the call """

        service, method = call_details.method[1:].split("/")
        log_fields.add_fields({
            "system":       "grpc",
            "span.kind":    self.KIND,
            "grpc.service": service,
            "grpc.method":  method,
        })