Add license header

Author: shadeMe

haystack_experimental/evaluation/pipeline_pair.py

@@ -1,3 +1,7 @@
+# SPDX-FileCopyrightText: 2022-present deepset GmbH <[email protected]>
+#
+# SPDX-License-Identifier: Apache-2.0
+
 from dataclasses import dataclass
 from typing import Any, Callable, Dict, List, Optional, Set, Tuple
 

haystack_experimental/evaluation/util.py

@@ -1,3 +1,7 @@
+# SPDX-FileCopyrightText: 2022-present deepset GmbH <[email protected]>
+#
+# SPDX-License-Identifier: Apache-2.0
+
 from copy import deepcopy
 from typing import Any, Dict, List
 

haystack_experimental/testing/sample_components.py

@@ -1,3 +1,7 @@
+# SPDX-FileCopyrightText: 2022-present deepset GmbH <[email protected]>
+#
+# SPDX-License-Identifier: Apache-2.0
+
 from typing import Optional, List
 from haystack.core.component import component