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