code: def __init__(self, datamodule: DataModule):
      self.datamodule = datamodule
      self._enabled = True
  
file_path: lightning-flash/src/flash/pointcloud/segmentation/open3d_ml/app.py
imports: import torch
  from flash.core.data.data_module import DataModule
  from flash.core.data.io.input import DataKeys
  from flash.core.utilities.imports import _TOPIC_POINTCLOUD_AVAILABLE
label_desc: Use image node_id 1 to create a new App object  with example: obj = App(datamodule)