Appends the rendering Unique Id to the Placeholder id for allowing a unique reference for the page renderings to attach on, default implementation only allows for a single Placeholder ID to be present on a page at one time. The extension is hidden to the ediors. Requires Sitecore 6.6 Sitecore 6.x versions are supported up to version 1.2, from 1.3 Sitecore 6.6 is required
$ dotnet add package SitecoreExtension.DynamicKeyPlaceholderNo README available.