two version of R2R are hereHEADmaster

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diff --git a/.venv/lib/python3.12/site-packages/grpc/framework/interfaces/face/utilities.py b/.venv/lib/python3.12/site-packages/grpc/framework/interfaces/face/utilities.py
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+# Copyright 2015 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+"""Utilities for RPC Framework's Face interface."""
+
+import collections
+
+# stream is referenced from specification in this module.
+from grpc.framework.common import cardinality
+from grpc.framework.common import style
+from grpc.framework.foundation import stream  # pylint: disable=unused-import
+from grpc.framework.interfaces.face import face
+
+
+class _MethodImplementation(
+    face.MethodImplementation,
+    collections.namedtuple(
+        "_MethodImplementation",
+        [
+            "cardinality",
+            "style",
+            "unary_unary_inline",
+            "unary_stream_inline",
+            "stream_unary_inline",
+            "stream_stream_inline",
+            "unary_unary_event",
+            "unary_stream_event",
+            "stream_unary_event",
+            "stream_stream_event",
+        ],
+    ),
+):
+    pass
+
+
+def unary_unary_inline(behavior):
+    """Creates an face.MethodImplementation for the given behavior.
+
+    Args:
+      behavior: The implementation of a unary-unary RPC method as a callable value
+        that takes a request value and an face.ServicerContext object and
+        returns a response value.
+
+    Returns:
+      An face.MethodImplementation derived from the given behavior.
+    """
+    return _MethodImplementation(
+        cardinality.Cardinality.UNARY_UNARY,
+        style.Service.INLINE,
+        behavior,
+        None,
+        None,
+        None,
+        None,
+        None,
+        None,
+        None,
+    )
+
+
+def unary_stream_inline(behavior):
+    """Creates an face.MethodImplementation for the given behavior.
+
+    Args:
+      behavior: The implementation of a unary-stream RPC method as a callable
+        value that takes a request value and an face.ServicerContext object and
+        returns an iterator of response values.
+
+    Returns:
+      An face.MethodImplementation derived from the given behavior.
+    """
+    return _MethodImplementation(
+        cardinality.Cardinality.UNARY_STREAM,
+        style.Service.INLINE,
+        None,
+        behavior,
+        None,
+        None,
+        None,
+        None,
+        None,
+        None,
+    )
+
+
+def stream_unary_inline(behavior):
+    """Creates an face.MethodImplementation for the given behavior.
+
+    Args:
+      behavior: The implementation of a stream-unary RPC method as a callable
+        value that takes an iterator of request values and an
+        face.ServicerContext object and returns a response value.
+
+    Returns:
+      An face.MethodImplementation derived from the given behavior.
+    """
+    return _MethodImplementation(
+        cardinality.Cardinality.STREAM_UNARY,
+        style.Service.INLINE,
+        None,
+        None,
+        behavior,
+        None,
+        None,
+        None,
+        None,
+        None,
+    )
+
+
+def stream_stream_inline(behavior):
+    """Creates an face.MethodImplementation for the given behavior.
+
+    Args:
+      behavior: The implementation of a stream-stream RPC method as a callable
+        value that takes an iterator of request values and an
+        face.ServicerContext object and returns an iterator of response values.
+
+    Returns:
+      An face.MethodImplementation derived from the given behavior.
+    """
+    return _MethodImplementation(
+        cardinality.Cardinality.STREAM_STREAM,
+        style.Service.INLINE,
+        None,
+        None,
+        None,
+        behavior,
+        None,
+        None,
+        None,
+        None,
+    )
+
+
+def unary_unary_event(behavior):
+    """Creates an face.MethodImplementation for the given behavior.
+
+    Args:
+      behavior: The implementation of a unary-unary RPC method as a callable
+        value that takes a request value, a response callback to which to pass
+        the response value of the RPC, and an face.ServicerContext.
+
+    Returns:
+      An face.MethodImplementation derived from the given behavior.
+    """
+    return _MethodImplementation(
+        cardinality.Cardinality.UNARY_UNARY,
+        style.Service.EVENT,
+        None,
+        None,
+        None,
+        None,
+        behavior,
+        None,
+        None,
+        None,
+    )
+
+
+def unary_stream_event(behavior):
+    """Creates an face.MethodImplementation for the given behavior.
+
+    Args:
+      behavior: The implementation of a unary-stream RPC method as a callable
+        value that takes a request value, a stream.Consumer to which to pass the
+        response values of the RPC, and an face.ServicerContext.
+
+    Returns:
+      An face.MethodImplementation derived from the given behavior.
+    """
+    return _MethodImplementation(
+        cardinality.Cardinality.UNARY_STREAM,
+        style.Service.EVENT,
+        None,
+        None,
+        None,
+        None,
+        None,
+        behavior,
+        None,
+        None,
+    )
+
+
+def stream_unary_event(behavior):
+    """Creates an face.MethodImplementation for the given behavior.
+
+    Args:
+      behavior: The implementation of a stream-unary RPC method as a callable
+        value that takes a response callback to which to pass the response value
+        of the RPC and an face.ServicerContext and returns a stream.Consumer to
+        which the request values of the RPC should be passed.
+
+    Returns:
+      An face.MethodImplementation derived from the given behavior.
+    """
+    return _MethodImplementation(
+        cardinality.Cardinality.STREAM_UNARY,
+        style.Service.EVENT,
+        None,
+        None,
+        None,
+        None,
+        None,
+        None,
+        behavior,
+        None,
+    )
+
+
+def stream_stream_event(behavior):
+    """Creates an face.MethodImplementation for the given behavior.
+
+    Args:
+      behavior: The implementation of a stream-stream RPC method as a callable
+        value that takes a stream.Consumer to which to pass the response values
+        of the RPC and an face.ServicerContext and returns a stream.Consumer to
+        which the request values of the RPC should be passed.
+
+    Returns:
+      An face.MethodImplementation derived from the given behavior.
+    """
+    return _MethodImplementation(
+        cardinality.Cardinality.STREAM_STREAM,
+        style.Service.EVENT,
+        None,
+        None,
+        None,
+        None,
+        None,
+        None,
+        None,
+        behavior,
+    )