Hello,
In which cases should we describe a property with  a pragma ? 
I guess that  property-pragmas will be used to set the list of attributes to the FM3MetaDescription of the class.
But by looking quikly to the famix implementation, it seems that some properties are described and other not.
For example, in FAMIXPackage, the method 'classes' is not described. Therefore it does not appear in the FAMIXPackageMetaDescription listOfAttributes. 
I don't know the reason?