Fix linter errors.

Author: dmandar

src/a2a/client/auth/credentials.py

@@ -32,6 +32,15 @@ async def get_credentials(
         security_scheme_name: str,
         context: ClientCallContext | None,
     ) -> str | None:
+        """Retrieves credentials from the in-memory store.
+
+        Args:
+            security_scheme_name: The name of the security scheme.
+            context: The client call context.
+
+        Returns:
+            The credential string, or None if not found.
+        """
         if not context or 'sessionId' not in context.state:
             return None
         session_id = context.state['sessionId']

src/a2a/client/auth/interceptor.py

@@ -12,13 +12,13 @@
     OpenIdConnectSecurityScheme,
 )
 
-
 logger = logging.getLogger(__name__)
 
 
 class AuthInterceptor(ClientCallInterceptor):
-    """An interceptor that automatically adds authentication details to requests
-    based on the agent's security schemes.
+    """An interceptor that automatically adds authentication details to requests.
+
+    Based on the agent's security schemes.
     """
 
     def __init__(self, credential_service: CredentialService):

src/a2a/client/client.py

@@ -1,12 +1,10 @@
 import json
 import logging
-
 from collections.abc import AsyncGenerator
 from typing import Any
 from uuid import uuid4
 
 import httpx
-
 from httpx_sse import SSEError, aconnect_sse
 from pydantic import ValidationError
 
@@ -29,7 +27,6 @@
 )
 from a2a.utils.telemetry import SpanKind, trace_class
 
-
 logger = logging.getLogger(__name__)
 
 
@@ -227,6 +224,7 @@ async def send_message(
             request: The `SendMessageRequest` object containing the message and configuration.
             http_kwargs: Optional dictionary of keyword arguments to pass to the
                 underlying httpx.post request.
+            context: The client call context.
 
         Returns:
             A `SendMessageResponse` object containing the agent's response (Task or Message) or an error.
@@ -263,6 +261,7 @@ async def send_message_streaming(
             request: The `SendStreamingMessageRequest` object containing the message and configuration.
             http_kwargs: Optional dictionary of keyword arguments to pass to the
                 underlying httpx.post request. A default `timeout=None` is set but can be overridden.
+            context: The client call context.
 
         Yields:
             `SendStreamingMessageResponse` objects as they are received in the SSE stream.
@@ -354,6 +353,7 @@ async def get_task(
             request: The `GetTaskRequest` object specifying the task ID and history length.
             http_kwargs: Optional dictionary of keyword arguments to pass to the
                 underlying httpx.post request.
+            context: The client call context.
 
         Returns:
             A `GetTaskResponse` object containing the Task or an error.
@@ -395,6 +395,7 @@ async def cancel_task(
             request: The `CancelTaskRequest` object specifying the task ID.
             http_kwargs: Optional dictionary of keyword arguments to pass to the
                 underlying httpx.post request.
+            context: The client call context.
 
         Returns:
             A `CancelTaskResponse` object containing the updated Task with canceled status or an error.
@@ -429,6 +430,7 @@ async def set_task_callback(
             request: The `SetTaskPushNotificationConfigRequest` object specifying the task ID and configuration.
             http_kwargs: Optional dictionary of keyword arguments to pass to the
                 underlying httpx.post request.
+            context: The client call context.
 
         Returns:
             A `SetTaskPushNotificationConfigResponse` object containing the confirmation or an error.
@@ -463,6 +465,7 @@ async def get_task_callback(
             request: The `GetTaskPushNotificationConfigRequest` object specifying the task ID.
             http_kwargs: Optional dictionary of keyword arguments to pass to the
                 underlying httpx.post request.
+            context: The client call context.
 
         Returns:
             A `GetTaskPushNotificationConfigResponse` object containing the configuration or an error.

src/a2a/client/middleware.py

@@ -12,8 +12,9 @@
 
 class ClientCallContext(BaseModel):
     """A context passed with each client call, allowing for call-specific
-    configuration and data passing, such as authentication details or
-    request deadlines.
+    configuration and data passing.
+
+    Such as authentication details or request deadlines.
     """
 
     state: MutableMapping[str, Any] = Field(default_factory=dict)