async def create_event_handler(
        self, schema: CreateEventSchema, organization_id: int = None, **kwargs
    ):
        """
        Custom create endpoint with organization_id as a prefix.
        """
        print(f"Creating event for organization {organization_id} with data: {kwargs}")
        data = await self.service.create_async(schema, **kwargs)
        return {"event": data, "organization": organization_id}

        Custom create endpoint with organization_id as a prefix.
        
tests/test_model_controller/async_samples.py