Provides search engine clients, all of which subclassed from {@link sg.yeefan.searchenginewrapper.SearchEngineClient SearchEngineClient} or {@link sg.yeefan.searchenginewrapper.KeyedSearchEngineClient KeyedSearchEngineClient}.

A search engine client may be used standalone, or used in conjunction with the {@link sg.yeefan.searchenginewrapper.SearchEngineWrapper SearchEngineWrapper} class. @author Tan Yee Fan