chore: import upstream snapshot with attribution

python/semantic_kernel/processes/process_message.py

@@ -0,0 +1,19 @@
+# Copyright (c) Microsoft. All rights reserved.
+
+from typing import Any
+
+from semantic_kernel.kernel_pydantic import KernelBaseModel
+from semantic_kernel.utils.feature_stage_decorator import experimental
+
+
+@experimental
+class ProcessMessage(KernelBaseModel):
+    """Represents a message used in a process runtime."""
+
+    source_id: str
+    destination_id: str
+    function_name: str
+    values: dict[str, Any]
+
+    target_event_id: str | None = None
+    target_event_data: Any | None = None