_SolverPackageFor
if (fPackagesAddedByUser.find(_SolverPackageFor(package))
if (fPackagesRemovedByUser.find(_SolverPackageFor(package))
BSolverPackage* solverPackage = _SolverPackageFor(*it);
BSolverPackage* solverPackage = _SolverPackageFor(*it);
BSolverPackage* _SolverPackageFor(Package* package) const;