class_docstr: Model is a part of the manifest.json. It defines the properties of the model such as name, version as weill
  as the entry point into the service code through the handler property
code: def __str__(self):
      return json.dumps(self.model_dict)
  
file_path: serve/model-archiver/model_archiver/manifest_components/model.py
imports: import json
  import os
label_desc: Use image node_id 3 for calling the Model obj's underlying member method code with example usage: obj.__str__() and returns: json