Run an Actor on the Apify platform and wait for results to be ready. Args: actor_id (str): The ID or name of the Actor on the Apify platform. run_input (Dict): The input object of the Actor that you're trying to run. dataset_mapping_function (Callable): A function that takes a single dictionary (an Apify dataset item) and converts it to an instance of the Document class. build (str, optional): Optionally specifies the actor build to run. It can be either a build tag or build number. memory_mbytes (int, optional): Optional memory limit for the run, in megabytes. timeout_secs (int, optional): Optional timeout for the run, in seconds. Returns: ApifyDatasetLoader: A loader that will fetch the records from the Actor run's default dataset.
