async def main_acall(self, human: str) -> str:
        """If available, a single text to a single text invocation of this app."""

        if self.__class__.main_call is not App.main_call:
            logger.warning("Using synchronous version of main call.")
            # Use the sync version if available.
            return await asynchro_utils.desync(self.main_call, human)

        raise NotImplementedError()
If available, a single text to a single text invocation of this app.
src/core/trulens/core/app.py