Too Long; Didn't Read
One often encountered feature of legacy <a href="https://hackernoon.com/tagged/code" target="_blank">code</a> is a tight coupling to an external framework or SDK. It may be in the form of a “<a href="https://hackernoon.com/tagged/manager" target="_blank">Manager</a>” or “ApiClient” singleton, used throughout the application in the most critical areas. Or it may be more subtle, like making use of a “DateUtil” class provided by the framework.