[docs] Add Google-style docstrings for dspy/adapters/chat_adapter.py ChatAdapter class #9063 (#9072)

* add chat adapter docs

* udpate chat adapter docs to not be overly specfic to chat

* inherit docs from parent class

* update fallback docs

* move docs to bottom, add extra args

* fix mkdocs issue

---------

Co-authored-by: Alex Zai <[email protected]>
Co-authored-by: chenmoneygithub <[email protected]>

Author: 3 people

dspy/adapters/chat_adapter.py

@@ -15,6 +15,7 @@
 )
 from dspy.clients.lm import LM
 from dspy.signatures.signature import Signature
+from dspy.utils.callback import BaseCallback
 from dspy.utils.exceptions import AdapterParseError
 
 field_header_pattern = re.compile(r"\[\[ ## (\w+) ## \]\]")
@@ -26,13 +27,33 @@ class FieldInfoWithName(NamedTuple):
 
 
 class ChatAdapter(Adapter):
+    """Default Adapter for most language models.
+
+    The ChatAdapter formats DSPy signatures into a format compatible with most language models.
+    It uses delimiter patterns like `[[ ## field_name ## ]]` to clearly separate input and output fields in
+    the message content.
+
+    Key features:
+        - Structures inputs and outputs using field header markers for clear field delineation.
+        - Provides automatic fallback to JSONAdapter if the chat format fails.
+    """
+
     def __init__(
         self,
-        callbacks=None,
+        callbacks: list[BaseCallback] | None = None,
         use_native_function_calling: bool = False,
-        native_response_types=None,
+        native_response_types: list[type[type]] | None = None,
         use_json_adapter_fallback: bool = True,
     ):
+        """
+        Args:
+            callbacks: List of callback functions to execute during adapter methods.
+            use_native_function_calling: Whether to enable native function calling capabilities.
+            native_response_types: List of output field types handled by native LM features.
+            use_json_adapter_fallback: Whether to automatically fallback to JSONAdapter if the ChatAdapter fails.
+                If True, when an error occurs (except ContextWindowExceededError), the adapter will retry using
+                JSONAdapter. Defaults to True.
+        """
         super().__init__(
             callbacks=callbacks,
             use_native_function_calling=use_native_function_calling,