def dynamic_source_filename(
        self,
        filename: str,                  # pylint: disable=unused-argument
        frame: FrameType,               # pylint: disable=unused-argument
    ) -> str | None:
        """Get a dynamically computed source file name.

        Some plug-ins need to compute the source file name dynamically for each
        frame.

        This function will not be invoked if
        :meth:`has_dynamic_source_filename` returns False.

        Returns the source file name for this frame, or None if this frame
        shouldn't be measured.

        """
        return None
Get a dynamically computed source file name.

        Some plug-ins need to compute the source file name dynamically for each
        frame.

        This function will not be invoked if
        :meth:`has_dynamic_source_filename` returns False.

        Returns the source file name for this frame, or None if this frame
        shouldn't be measured.

        
coverage/plugin.py