class_docstr: NNOp to triton model.
class_docstr_tok: ["NNOp","to","triton","model","."]
code: def _prepare_model(self):
      for fmt in self._model_format_priority:
          if fmt in self._op.supported_formats:
              if fmt == "onnx":
                  return self._save_onnx_model()
          else:
              engine_log.warning("Unknown optimize %s", fmt)
              continue
      return 0
  
file_path: towhee/towhee/serve/triton/model_to_triton.py
imports: import traceback
  from towhee.utils.log import engine_log
  from towhee.utils.onnx_utils import onnx
  from towhee.serve.triton import constant
  from towhee.serve.triton.triton_config_builder import create_modelconfig
  from towhee.serve.triton.triton_files import TritonFiles
label_desc: Use image node_id 5 for calling the ModelToTriton obj's underlying member method code with example usage: obj._prepare_model() and returns: int, self