Method getRoot

plugins/e57/libE57Format/src/NodeImpl.cpp:188–198

}

NodeImplSharedPtr NodeImpl::getRoot()
{
   // don't checkImageFileOpen
   NodeImplSharedPtr p( shared_from_this() );
   while ( !p->isRoot() )
   {
      p = NodeImplSharedPtr( p->parent_ ); //??? check if bad ptr?
   }

   return p;
}

//??? use visitor?
bool NodeImpl::isTypeConstrained()