Return a fully-qualified scan_run string.

def scan_run_path(cls, project, scan_config, scan_run):
        """Return a fully-qualified scan_run string."""
        return google.api_core.path_template.expand(
            "projects/{project}/scanConfigs/{scan_config}/scanRuns/{scan_run}",
            project=project,
            scan_config=scan_config,
            scan_run=scan_run,
        )