def make_temporary_cache_class_mixin(manager_cls: Type[AbstractManager]) -> Type[<EOL>AbstractTemporaryCacheClassMixin]:  
class TemporaryCacheClassMixin(AbstractTemporaryCacheClassMixin):<EOL><INDENT>Manager = manager_cls<EOL><DEDENT>return TemporaryCacheClassMixin<EOL>
Build a testing class that has a Bio2BEL manager instance ready to go.