Gets a specific implementation node.
Requested configuration node. If no node is found, null is returned.
Implementation nodes are nodes describing 'pluggable' types. These are typically data providers or other types that may vary significantly between installations.
Get the configuration node for the master database index and display the name of the class implementing it:
XmlNode node = GetImplementationNode(typeof(IIndex), "master");
MainUtil.Out("Master index implemented by: " + XmlUtil.GetAttribute("class", node));
Outputs: Master index implemented by: Sitecore.Index.
ConfigReader Class | Sitecore.Configuration Namespace