async def METHOD_NAME(self):
    async with self.callbacks_lock:
        if self.callbacks == {}:
            self.diag.info("No callbacks")
        else:
            self.diag.info("--------------------------------------------------")
            self.diag.info("Callbacks")
            self.diag.info("--------------------------------------------------")
            for name in self.callbacks.keys():
                self.diag.info("%s:", name)
                for uuid_ in self.callbacks[name]:
                    self.diag.info("  %s = %s", uuid_, self.callbacks[name][uuid_])
            self.diag.info("--------------------------------------------------")