//<doc:execute>
/// <summary>
/// Run the application.
/// </summary>
public override BoolMessageItem Execute()
{
// 1. ExtensionService loads classes with "Extension" attribute w/ interface IBlogWidget
var exts = new ExtensionService <ExtensionAttribute, IBlogWidget>();
// 2. Load extensions/plugins from "CommonLibrary"
exts.Load("CommonLibrary");
// 3. Get instance of extension with name "BlogWidget_1".
IBlogWidget widget = exts.Create("BlogWidget_1");
var content = widget.Render();
return(BoolMessageItem.True);
}