old_contents: # -*- coding: utf-8 -*-
  
  from typing import Union, Optional, Tuple
  from pathlib import Path
  from abc import ABC, abstractmethod
  
  from sklearn_porter.enums import Method, Language, Template
  
  
  class EstimatorApiABC(ABC):
      """
      An abstract interface to ensure equal methods between the
      main class `sklearn_porter.Estimator` and all subclasses
      in `sklearn-porter.estimator.*`.
      """
  
      @abstractmethod
      def port(
              self,
              language: Optional[Language] = None,
              template: Optional[Template] = None,
              to_json: bool = False,
              **kwargs
      ) -> Union[str, Tuple[str, str]]:
          """
          Port an estimator.
  
          Parameters
          ----------
          method : Method
              The required method.
          language : Language
              The required language.
          template : Template
              The required template.
          kwargs
  
          Returns
          -------
          The ported estimator.
          """
          pass
  
      @abstractmethod
      def dump(
              self,
              language: Optional[Language] = None,
              template: Optional[Template] = None,
              directory: Optional[Union[str, Path]] = None,
              to_json: bool = False,
              **kwargs
      ) -> Union[str, Tuple[str, str]]:
          """
          Dump an estimator to the filesystem.
  
          Parameters
          ----------
          method : Method
              The required method.
          language : Language
              The required language.
          template : Template
              The required template
          directory : str or Path
              The destination directory.
          kwargs
  
          Returns
          -------
          The paths to the dumped files.
          """
          pass
  
new_contents: # -*- coding: utf-8 -*-
  
  from typing import Union, Optional, Tuple
  from pathlib import Path
  from abc import ABC, abstractmethod
  
  from sklearn_porter.enums import Language, Template
  
  
  class EstimatorApiABC(ABC):
      """
      An abstract interface to ensure equal methods between the
      main class `sklearn_porter.Estimator` and all subclasses
      in `sklearn-porter.estimator.*`.
      """
  
      @abstractmethod
      def port(
              self,
              language: Optional[Language] = None,
              template: Optional[Template] = None,
              to_json: bool = False,
              **kwargs
      ) -> Union[str, Tuple[str, str]]:
          """
          Port an estimator.
  
          Parameters
          ----------
          language : Language
              The required language.
          template : Template
              The required template.
          to_json : bool (default: False)
              Return the result as JSON string.
          kwargs
  
          Returns
          -------
          The ported estimator.
          """
  
      @abstractmethod
      def dump(
              self,
              language: Optional[Language] = None,
              template: Optional[Template] = None,
              directory: Optional[Union[str, Path]] = None,
              to_json: bool = False,
              **kwargs
      ) -> Union[str, Tuple[str, str]]:
          """
          Dump an estimator to the filesystem.
  
          Parameters
          ----------
          language : Language
              The required language.
          template : Template
              The required template
          directory : str or Path
              The destination directory.
          to_json : bool (default: False)
              Return the result as JSON string.
          kwargs
  
          Returns
          -------
          The paths to the dumped files.
          """
  
subject: Remove unused imports and `pass` keywords