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							- from abc import ABC, abstractmethod
 - 
 - 
 - class RecommendAppRetrievalBase(ABC):
 -     """Interface for recommend app retrieval."""
 - 
 -     @abstractmethod
 -     def get_recommended_apps_and_categories(self, language: str) -> dict:
 -         raise NotImplementedError
 - 
 -     @abstractmethod
 -     def get_recommend_app_detail(self, app_id: str):
 -         raise NotImplementedError
 - 
 -     @abstractmethod
 -     def get_type(self) -> str:
 -         raise NotImplementedError
 
 
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