diff --git a/src/depiction_targeted_preprocbatch/executor.py b/src/depiction_targeted_preprocbatch/executor.py
index 47e1494..9810a25 100644
--- a/src/depiction_targeted_preprocbatch/executor.py
+++ b/src/depiction_targeted_preprocbatch/executor.py
@@ -87,8 +87,13 @@ def run_job(self, job: BatchJob) -> None:
         # export the results
         # TODO do not hardcode id
         output_storage = Storage.find(id=2, client=self._client)
-        JobExportResults(client=self._client, work_dir=self._work_dir, workunit_config=self._workunit_config).export(
-            sample_name=sample_dir.name, result_files=result_files, output_storage=output_storage
+        JobExportResults.export(
+            client=self._client,
+            work_dir=self._work_dir,
+            workunit_config=self._workunit_config,
+            sample_name=sample_dir.name,
+            result_files=result_files,
+            output_storage=output_storage,
         )
 
     def _determine_result_files(self, job_dir: Path) -> list[Path]:
diff --git a/src/depiction_targeted_preprocbatch/job_export_results.py b/src/depiction_targeted_preprocbatch/job_export_results.py
index 4951533..8345f38 100644
--- a/src/depiction_targeted_preprocbatch/job_export_results.py
+++ b/src/depiction_targeted_preprocbatch/job_export_results.py
@@ -19,7 +19,21 @@ def __init__(self, client: Bfabric, work_dir: Path, workunit_config: WorkunitCon
         self._workunit_config = workunit_config
         self.output_dir = work_dir / "output"
 
-    def export(self, sample_name: str, result_files: list[Path], output_storage: Storage) -> None:
+    @classmethod
+    def export(
+        cls,
+        client: Bfabric,
+        work_dir: Path,
+        workunit_config: WorkunitConfig,
+        sample_name: str,
+        result_files: list[Path],
+        output_storage: Storage,
+    ) -> None:
+        """Exports the results of one job."""
+        instance = cls(client=client, work_dir=work_dir, workunit_config=workunit_config)
+        instance.export_results(sample_name, result_files, output_storage)
+
+    def export_results(self, sample_name: str, result_files: list[Path], output_storage: Storage) -> None:
         """Exports the results of one job."""
         zip_file_path = self._create_zip_file(result_files, sample_name)
         output_path_relative = self._copy_zip_to_storage(zip_file_path, output_storage)