qt - QDoc ignores class in namespace

Question

I am writing a qt like documentation and qDoc is ignoring classes in namespace. If I want to document class which is not on namespace I use:

/*!
    \class ClassName
    \inmodule myModule
    \brief ...
*/

When there is a namespace I use:

/*!
    \class Mynamespace::ClassName
    \inmodule myModule
    \brief ...
*/

Anyway, Mynamespace::ClassName is not a part of final documentation, no html files are generated for that class. Documentation for classes with no namespaces works fine. Any idea what is wrong here? I am not getting any warning. Qt 5.4.1