QVT — Extent of intermediate classes in QVT Operational

The extent when creating instances of intermediate classes cannot be determined
if there is no modeltype associated with the definition of intermediate classes.

(1) In section 8.2.1.3 Module, in the description of derived property ownedType, append the following sentence: If the module contains the declaration of intermediate classes (see OperationalTransformation::intermediateClass definition) a model type named '_INTERMEDIATE' is automatically defined and inserted in the list of owned types. The model type package is also named '_INTERMEDIATE'.
This package is nested by the transformation (by means of the inherited Package::nestedPackage property).
(2) In section 8.2.1.3 Module, in the description of the property usedModelType replace the description paragraph by: "The list of model types being used. This includes the implicit '_INTERMEDIATE' model type when available (see ownedType description).
(3) In Section 8.2.1.1 Transformation, in the description of the property modelParameter, add the sentence "If the transformation defines intermediate classes this contains a parameter named '_intermediate'
of the type '_INTERMEDIATE' (see 'Module::ownedType' property description).