Access to analyzers in a subclass of AnalyzerGroup

[alireza-hosseini]

For an advanced usage of AnalyzerGroup class, I need to reimplement some of its public methods, but the big problem is reimplementing its virtual methods while I don't have access to the main class member which is std::vector<boost::shared_ptr<Analyzer> > analyzers_ doesn't really make sense and kind of impossible.
Is there any specific reason for defining analyzers_ as private and not protected (or a getter function for it)?
Currently, as a quick-fix, I reimplemented the addAnalyzer method and stored the analyzers in an additional std::vector<boost::weak_ptr<Analyzer>>.