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