/// <summary>
/// Add a class which extends System.ValueType to this Module
/// If this class already exists, throw an exception
/// </summary>
/// <param name="attrSet">attributes of this class</param>
/// <param name="nsName">name space name</param>
/// <param name="name">class name</param>
/// <returns>a descriptor for this new class</returns>
public ClassDef AddValueClass(TypeAttr attrSet, string nsName, string name)
{
ClassDef aClass = AddClass(attrSet, nsName, name);
aClass.SuperType = MSCorLib.mscorlib.ValueType();
aClass.MakeValueClass();
return(aClass);
}