>What's middlewareMain ?

It is a public class in another project

   public class MiddlewareMain : MiddlewareBase
   {
      private delegate String InvokeMethod(Dictionary<String, String> parameters);
      private Dictionary<String, InvokeMethod> invokeMethods;
      private Sales _sales;
      private Data _data;
      private Retail _retail;
      private Bookings _bookings;
      private Validation _validation;
      private Boolean _bShouldRollback             = false;
      private Boolean _bShouldRollbackGlobalInvoke = false;

...

In the Test class used as a base for other test classes I see the following code:

 public abstract class UnitTestBase
   {
      public static IniFile iniFile, systemIniFile;
      public static MiddlewareMain middlewareMain;
      public static Boolean isClassInitialized = false;