chore: import upstream snapshot with attribution

tests/trainer/sample_components.py

@@ -0,0 +1,34 @@
+# Copyright (c) Microsoft. All rights reserved.
+
+from __future__ import annotations
+
+from typing import Any
+
+
+class SampleBase:
+    pass
+
+
+class SampleComponent(SampleBase):
+    def __init__(self, required: int, optional: int = 7) -> None:
+        self.required = required
+        self.optional = optional
+
+
+class SimpleComponent(SampleBase):
+    def __init__(self) -> None:
+        self.created = True
+
+
+class ComponentWithoutOptional(SampleBase):
+    def __init__(self, value: int) -> None:
+        self.value = value
+
+
+class ComponentWithKwargs(SampleBase):
+    def __init__(self, **kwargs: Any) -> None:
+        self.kwargs = kwargs
+
+
+class Unrelated:
+    pass