class_docstr: An abstract base class for a model that implements lipschitz
  constants
  
  Parameters
  ----------
  dtype : `{'float64', 'float32'}`, default='float64'
      Type of the arrays used. This value is set from model and prox dtypes.
  
  Notes
  -----
  This class should be not used by end-users, it is intended for
  development only.
docstr: The method that actually does the computation. Must be overloaded
  in childs
code: def _get_lip_best(self) -> float:
      """The method that actually does the computation. Must be overloaded
      in childs
      """
      pass
  
file_path: tick/tick/base_model/model_lipschitz.py
imports: from abc import abstractmethod
  from .None import Model
label_desc: Use image node_id 6 for calling the ModelLipschitz obj's underlying member method code with example usage: obj._get_lip_best() without return types