How to use the foremast.pipeline.SpinnakerPipelineOnetime function in foremast

raise NotImplementedError('Pipeline type "{0}" not permitted.'.format(pipeline_type))

        if not onetime:
            if pipeline_type == 'lambda':
                spinnakerpipeline = pipeline.SpinnakerPipelineLambda(**kwargs)
            elif pipeline_type == 's3':
                spinnakerpipeline = pipeline.SpinnakerPipelineS3(**kwargs)
            elif pipeline_type == 'datapipeline':
                spinnakerpipeline = pipeline.SpinnakerPipelineDataPipeline(**kwargs)
            elif pipeline_type in consts.MANUAL_TYPES:
                spinnakerpipeline = pipeline.SpinnakerPipelineManual(**kwargs)
            else:
                # Handles all other pipelines
                spinnakerpipeline = pipeline.SpinnakerPipeline(**kwargs)
        else:
            spinnakerpipeline = pipeline.SpinnakerPipelineOnetime(onetime=onetime, **kwargs)

        spinnakerpipeline.create_pipeline()

def create_pipeline(self, onetime=None):
        """ Creates the spinnaker pipeline """
        utils.banner("Creating Pipeline")
        if not onetime:
            spinnakerpipeline = pipeline.SpinnakerPipeline(
                app=self.app,
                trigger_job=self.trigger_job,
                prop_path=self.json_path,
                base=None,
                token_file=self.gitlab_token_path)
        else:
            spinnakerpipeline = pipeline.SpinnakerPipelineOnetime(
                app=self.app,
                trigger_job=self.trigger_job,
                prop_path=self.json_path,
                base=None,
                token_file=self.gitlab_token_path,
                onetime=onetime)

        spinnakerpipeline.create_pipeline()