class_docstr: `ModelBase` is the base class of the `parl.Model` in different frameworks.
  
  This base class mainly do the following things:
      1. Implements APIs to manage model_id of the `parl.Model`; 
      2. Defines common APIs that `parl.Model` should implement in different frameworks.
code: def __init__(self):
      pass
  
file_path: PARL/parl/core/model_base.py
label_desc: Use image node_id 1 to create a new ModelBase object from inherited base classes: object with example: obj = ModelBase()