code: def pointcloud_segmentation():
      """Segment objects in point clouds."""
      cli = FlashCLI(
          PointCloudSegmentation,
          PointCloudSegmentationData,
          default_datamodule_builder=from_kitti,
          default_arguments={
              "trainer.max_epochs": 3,
              "model.backbone": "randlanet_semantic_kitti",
          },
          finetune=False,
      )
  
      cli.trainer.save_checkpoint("pointcloud_segmentation_model.pt")
  
imports: from flash.core.data.utils import download_data
  from flash.core.utilities.flash_cli import FlashCLI
  from flash.pointcloud import PointCloudSegmentation, PointCloudSegmentationData
label_desc: Use image node_id 2 for calling a global function with example usage: pointcloud_segmentation() without return types