code: def exists(self):
      return self._exists
  
imports: import io
  import os
  import shutil
  import uuid
  from tempfile import mkdtemp
  from metaflow.exception import MetaflowException, MetaflowInternalError
label_desc: Use image node_id 4 for calling the GSObject obj's underlying member method code with example usage: obj.exists() and returns: self