code: def summarization():
      """Summarize text."""
      cli = FlashCLI(
          SummarizationTask,
          SummarizationData,
          default_datamodule_builder=from_xsum,
          default_arguments={
              "trainer.max_epochs": 3,
              "model.backbone": "sshleifer/distilbart-xsum-1-1",
          },
      )
  
      cli.trainer.save_checkpoint("summarization_model_xsum.pt")
  
imports: from flash.core.data.utils import download_data
  from flash.core.utilities.flash_cli import FlashCLI
  from flash.text import SummarizationData, SummarizationTask
label_desc: Use image node_id 2 for calling a global function with example usage: summarization() without return types