chore: import upstream snapshot with attribution

tests/fixtures/multi_call_example.py

@@ -0,0 +1,13 @@
+"""Fixture with multiple calls to the same function from one caller."""
+
+
+async def _internal_request(url: str, data: bytes) -> dict:
+    return {"url": url}
+
+
+async def process_document(content: bytes) -> str:
+    """Calls _internal_request twice on different lines."""
+    first = await _internal_request("http://localhost/fast", content)
+    text = first.get("body", "")
+    second = await _internal_request("http://localhost/slow", content)
+    return text or second.get("body", "")