chore: Add typed stub for twilio.rest.Client + to_dict type hints fix

[al-chris]

Fixes

Summary

• Added a type stub exposing the Client initializer and domain properties: twilio/rest/__init__.pyi.
• Included a follow-up runtime fix that adds return type hints to to_dict() methods and safer policy handling in the Knowledge module.

Commits included

• 914845712 feat: add initial typings for Twilio REST client
• e70d11fac fix: add type hints and improve policy handling in to_dict methods

Files changed

• A new stub: twilio/rest/__init__.pyi
• Modified runtime module: twilio/rest/knowledge/v1/knowledge/__init__.py (type hints and policy handling in multiple to_dict methods)

Why

• The .pyi stub improves IDE/autocomplete and prepares the codebase for static typing.
• The runtime changes ensure to_dict() is correctly typed and avoid attribute errors when policy objects do not implement to_dict().

Patch summary for knowledge module (selected excerpt)

Commit: e70d11f
Message: fix: add type hints and improve policy handling in to_dict methods

Diff excerpt:

--- a/twilio/rest/knowledge/v1/knowledge/init.py
+++ b/twilio/rest/knowledge/v1/knowledge/init.py
@@

•    def to_dict(self):
  

•    def to_dict(self) -> Dict[str, Any]:
         return {
             "description": self.description,
             "knowledge_source_details": self.knowledge_source_details,
             "name": self.name,
  

•            "policy": self.policy.to_dict() if self.policy is not None else None,
  

•            "policy": self.policy.to_dict() if (self.policy is not None and hasattr(self.policy, "to_dict")) else None,
             "type": self.type,
             "embedding_model": self.embedding_model,
         }
  

(Repeated in multiple classes: KnowledgeInstance, KnowledgeContext, KnowledgeList — each to_dict now has a -> Dict[str, Any] return annotation and safer policy handling.)

How to test

• Run type checks and tests locally:

pip install -e .[dev]
mypy twilio --follow-imports=silent
pytest -q

Notes

• The .pyi file is annotation-only and doesn't change runtime behavior.
• The knowledge module changes are small, well-scoped runtime fixes; they should be safe but please run unit tests and smoke test features that use policy objects.

Suggested branch/commit

• Branch: add/stubs/twilio-rest-client
• Commit messages already present in history: 914845712, e70d11fac

Requesting review from

• @maintainers or module owners familiar with twilio.rest and knowledge modules

Checklist

• I acknowledge that all my contributions will be made under the project's license
• I have made a material change to the repo (functionality, testing, spelling, grammar)
• I have read the Contribution Guidelines and my PR follows them
• I have titled the PR appropriately
• I have updated my branch with the main branch
• I have added tests that prove my fix is effective or that my feature works
• I have added the necessary documentation about the functionality in the appropriate .md file
• I have added inline documentation to the code I modified

If you have questions, please file a support ticket, or create a GitHub Issue in this repository.