func (svc ServerlessClusterService) DownloadArtifact(ctx context.Context,
    request *models.DownloadArtifactInput) (*models.UploadedArtifactLink, *Response, error) {
    var artifact models.UploadedArtifactLink
    graphqlQuery := models.GraphqlRequest{
        Name:      "downloadCustomClassesArtifact",