python: add developer role to AuthorRole, ChatHistory for openai o1

python/semantic_kernel/contents/chat_history.py

@@ -98,6 +98,21 @@ def add_system_message_list(self, content: list[KernelContent], **kwargs: Any) -
         """Add a system message to the chat history."""
         self.add_message(message=self._prepare_for_add(role=AuthorRole.SYSTEM, items=content, **kwargs))
 
+    @singledispatchmethod
+    def add_developer_message(self, content: str | list[KernelContent], **kwargs) -> None:
+        """Add a system message to the chat history."""
+        raise NotImplementedError
+
+    @add_developer_message.register
+    def add_developer_message_str(self, content: str, **kwargs: Any) -> None:
+        """Add a system message to the chat history."""
+        self.add_message(message=self._prepare_for_add(role=AuthorRole.DEVELOPER, content=content, **kwargs))
+
+    @add_developer_message.register(list)
+    def add_developer_message_list(self, content: list[KernelContent], **kwargs: Any) -> None:
+        """Add a system message to the chat history."""
+        self.add_message(message=self._prepare_for_add(role=AuthorRole.DEVELOPER, items=content, **kwargs))
+
     @singledispatchmethod
     def add_user_message(self, content: str | list[KernelContent], **kwargs: Any) -> None:
         """Add a user message to the chat history."""

python/semantic_kernel/contents/utils/author_role.py

@@ -9,3 +9,4 @@ class AuthorRole(str, Enum):
     USER = "user"
     ASSISTANT = "assistant"
     TOOL = "tool"
+    DEVELOPER = "developer"