ProblemAt
virtual BSolverProblem* ProblemAt(int32 index) const = 0;
BSolverProblem* problem = fSolver->ProblemAt(i);
BSolverProblem* problem = fSolver->ProblemAt(i);
solver->ProblemAt(i)->ToString().String());
virtual BSolverProblem* ProblemAt(int32 index) const;
_AddProblem(solver->ProblemAt(i),
BSolverProblem* problem = solver->ProblemAt(i);
BSolverProblem* problem = solver->ProblemAt(i);