Address linting issues.

Author: albertofori

src/azure-cli/azure/cli/command_modules/appconfig/_credential.py

@@ -1,17 +1,23 @@
-from azure.core.credentials import TokenCredential
+# --------------------------------------------------------------------------------------------
+# Copyright (c) Microsoft Corporation. All rights reserved.
+# Licensed under the MIT License. See License.txt in the project root for license information.
+# --------------------------------------------------------------------------------------------
+
+# pylint: disable=too-few-public-methods
 from azure.cli.core.auth.util import resource_to_scopes
 
-# Enable passing in custom token audience that takes precedence over SDK's hardcoded audience.
+
+# This class is used to pass in custom token audience that will be respected by the SDK.
 # Users can configure an audience based on their cloud.
-class AppConfigurationCliCredential(TokenCredential):
+class AppConfigurationCliCredential:
 
-    def __init__(self, credential: TokenCredential, resource: str = None):
+    def __init__(self, credential, resource: str = None):
         self._impl = credential
         self._resource = resource
-    
+
     def get_token(self, *scopes, **kwargs):
 
         if self._resource is not None:
             scopes = resource_to_scopes(self._resource)
 
-        return self._impl.get_token(*scopes, **kwargs)
+        return self._impl.get_token(*scopes, **kwargs)

src/azure-cli/azure/cli/command_modules/appconfig/_utils.py

@@ -188,7 +188,7 @@ def get_appconfig_data_client(cmd, name, connection_string, auth_mode, endpoint)
             token_audience = current_cloud.endpoints.appconfig_auth_token_audience
 
         try:
-            azconfig_client = AzureAppConfigurationClient(credential=AppConfigurationCliCredential(cred._credential, token_audience),
+            azconfig_client = AzureAppConfigurationClient(credential=AppConfigurationCliCredential(cred._credential, token_audience),  # pylint: disable=protected-access
                                                           base_url=endpoint,
                                                           user_agent=HttpHeaders.USER_AGENT)
         except (ValueError, TypeError) as ex: