Doxygen has a bug (https://bugzilla.gnome.org/626105) which prevents it from finding the variable when using /** @var Type */ comments.
Example:
/**
- @var Title */ protected $mTitle;
Doxygen will fail to see that $mTitle is a Title object.
A workaround is to use an input filter as described in http://stackoverflow.com/a/8472180/276152
Version: unspecified
Severity: normal