code: def semantic_segmentation():
      """Segment objects in images."""
      cli = FlashCLI(
          SemanticSegmentation,
          SemanticSegmentationData,
          default_datamodule_builder=from_carla,
          default_arguments={
              "trainer.max_epochs": 3,
          },
      )
  
      cli.trainer.save_checkpoint("semantic_segmentation_model.pt")
  
imports: from flash.core.data.utils import download_data
  from flash.core.utilities.flash_cli import FlashCLI
  from flash.image import SemanticSegmentation, SemanticSegmentationData
label_desc: Use image node_id 2 for calling a global function with example usage: semantic_segmentation() without return types