def two_space_indented_func(a: int) -> str:
        """
        A function with 2-space indentation.

        Args:
            a: The parameter

        Returns:
            str: The string representation of the parameter
        """
        
        def nested_func(b: int) -> int:
          return b + a
        
        return str(nested_func(a))

        A function with 2-space indentation.

        Args:
            a: The parameter

        Returns:
            str: The string representation of the parameter
        
ai/core/tests/core/test_callable_utils.py