-template< class _TInputImage, class _TLabelImage, class _TScalar >
-typename fpa::Image::RandomWalker< _TInputImage, _TLabelImage, _TScalar >::
-TNodes fpa::Image::RandomWalker< _TInputImage, _TLabelImage, _TScalar >::
+template< class _TInputImage, class _TLabelImage, class _TScalar, class _TTraits >
+typename fpa::Image::RandomWalker< _TInputImage, _TLabelImage, _TScalar, _TTraits >::
+TNodes fpa::Image::RandomWalker< _TInputImage, _TLabelImage, _TScalar, _TTraits >::