Callbacks Refactor [base] (#3256)

Co-authored-by: Nuno Campos <nuno@boringbits.io>
Co-authored-by: Davis Chase <130488702+dev2049@users.noreply.github.com>
Co-authored-by: Zander Chase <130414180+vowelparrot@users.noreply.github.com>
Co-authored-by: Harrison Chase <hw.chase.17@gmail.com>

tests/unit_tests/agents/test_react.py

@@ -4,6 +4,7 @@ from typing import Any, List, Mapping, Optional, Union
 
 from langchain.agents.react.base import ReActChain, ReActDocstoreAgent
 from langchain.agents.tools import Tool
+from langchain.callbacks.manager import CallbackManagerForLLMRun
 from langchain.docstore.base import Docstore
 from langchain.docstore.document import Document
 from langchain.llms.base import LLM
@@ -32,7 +33,12 @@ class FakeListLLM(LLM):
         """Return type of llm."""
         return "fake_list"
 
-    def _call(self, prompt: str, stop: Optional[List[str]] = None) -> str:
+    def _call(
+        self,
+        prompt: str,
+        stop: Optional[List[str]] = None,
+        run_manager: Optional[CallbackManagerForLLMRun] = None,
+    ) -> str:
         """Increment counter, and then return response in that index."""
         self.i += 1
         return self.responses[self.i]