https://blogs.objectmentor.com/ArticleS.MichaelFeathers.IsProgrammingTooEasyhttps://blogs.objectmentor.com/ArticleS.MichaelFeathers.ItsTimeToDeprecateFinalhttps://blogs.objectmentor.com/ArticleS.MichaelFeathers.TheGoldenRuleOfApiDesignhttps://blogs.objectmentor.com/ArticleS.UncleBob.BoundedWildcards