fix(toolbox-langchain): Expose auth requirements from underlying core tool

packages/toolbox-langchain/src/toolbox_langchain/tools.py

@@ -13,7 +13,7 @@
 # limitations under the License.
 
 from asyncio import to_thread
-from typing import Any, Callable, Union
+from typing import Any, Awaitable, Callable, Mapping, Sequence, Union
 
 from deprecated import deprecated
 from langchain_core.tools import BaseTool
@@ -47,6 +47,32 @@ def __init__(
         )
         self.__core_tool = core_tool
 
+    @property
+    def _bound_params(
+        self,
+    ) -> Mapping[str, Union[Callable[[], Any], Callable[[], Awaitable[Any]], Any]]:
+        return self.__core_tool._bound_params
+
+    @property
+    def _required_authn_params(self) -> Mapping[str, list[str]]:
+        return self.__core_tool._required_authn_params
+
+    @property
+    def _required_authz_tokens(self) -> Sequence[str]:
+        return self.__core_tool._required_authz_tokens
+
+    @property
+    def _auth_service_token_getters(
+        self,
+    ) -> Mapping[str, Union[Callable[[], str], Callable[[], Awaitable[str]]]]:
+        return self.__core_tool._auth_service_token_getters
+
+    @property
+    def _client_headers(
+        self,
+    ) -> Mapping[str, Union[Callable[[], str], Callable[[], Awaitable[str]], str]]:
+        return self.__core_tool._client_headers
+
     def _run(self, **kwargs: Any) -> str:
         return self.__core_tool(**kwargs)