How to use the asgiref.sync.SyncToAsync.get_current_task function in asgiref

def _get_context_id(self):
        """
        Get the ID we should use for looking up variables
        """
        # Prevent a circular reference
        from .sync import AsyncToSync, SyncToAsync

        # First, pull the current task if we can
        context_id = SyncToAsync.get_current_task()
        context_is_async = True
        # OK, let's try for a thread ID
        if context_id is None:
            context_id = threading.current_thread()
            context_is_async = False
        # If we're thread-critical, we stop here, as we can't share contexts.
        if self._thread_critical:
            return context_id
        # Now, take those and see if we can resolve them through the launch maps
        for i in range(sys.getrecursionlimit()):
            try:
                if context_is_async:
                    # Tasks have a source thread in AsyncToSync
                    context_id = AsyncToSync.launch_map[context_id]
                    context_is_async = False
                else:

async def main_wrap(self, args, kwargs, call_result, source_thread, exc_info):
        """
        Wraps the awaitable with something that puts the result into the
        result/exception future.
        """
        current_task = SyncToAsync.get_current_task()
        self.launch_map[current_task] = source_thread
        try:
            # If we have an exception, run the function inside the except block
            # after raising it so exc_info is correctly populated.
            if exc_info[1]:
                try:
                    raise exc_info[1]
                except:
                    result = await self.awaitable(*args, **kwargs)
            else:
                result = await self.awaitable(*args, **kwargs)
        except Exception as e:
            call_result.set_exception(e)
        else:
            call_result.set_result(result)
        finally: