code: def add_data_param(
      parser: Union[argparse.ArgumentParser, argparse._ActionsContainer]
  ) -> None:
      """Specifies path to training data."""
      parser.add_argument(
          "--data",
          default=[DEFAULT_DATA_PATH],
          nargs="+",
          help="Paths to the Core and NLU data files.",
      )
  
imports: import argparse
  from typing import Union
  from rasa.cli.arguments.default_arguments import add_config_param, add_stories_param, add_nlu_data_param, add_out_param, add_domain_param, add_endpoint_param
  from rasa.graph_components.providers.training_tracker_provider import TrainingTrackerProvider
  from rasa.shared.constants import DEFAULT_CONFIG_PATH, DEFAULT_DATA_PATH
label_desc: Use image node_id 5 for calling a global function with example usage: add_data_param(parser) without return types