chore: import upstream snapshot with attribution

python/ray/serve/tests/test_config_files/arg_builders.py

@@ -0,0 +1,25 @@
+from pydantic import BaseModel
+
+from ray import serve
+
+
+class TypedArgs(BaseModel):
+    message: str = "DEFAULT"
+
+
+@serve.deployment(ray_actor_options={"num_cpus": 0})
+class Echo:
+    def __init__(self, message: str):
+        print("Echo message:", message)
+        self._message = message
+
+    def __call__(self, *args):
+        return self._message
+
+
+def build_echo_app(args):
+    return Echo.bind(args.get("message", "DEFAULT"))
+
+
+def build_echo_app_typed(args: TypedArgs):
+    return Echo.bind(args.message)