code: def to_device(self, device: str):
      # TODO figure out how to control the GPU for ludwig models
      return self
  
file_path: evadb/evadb/functions/ludwig.py
imports: import pandas
  from evadb.functions.abstract.abstract_function import AbstractFunction
  from evadb.utils.generic_utils import try_to_import_ludwig
label_desc: Use image node_id 4 for calling the GenericLudwigModel obj's underlying member method code with example usage: obj.to_device(device) and returns: self