Look for modules in the typeshed repository that have a module level ` getattr ` function with a comment like 'incomplete module'. These modules lack complete type stubs. Start by finding such modules using git grep or navigating the stubs directory. Then, examine the corresponding third party library's API to define proper type hints. If unsure, check if there's an existing stub or comment in the issue for guidance. Submit a PR that replaces the ` getattr ` with complete type annotations.