Resolve "Processor motion model"

Closes #407 (closed)

include/core/ceres_wrapper/solver_ceres.h

@@ -119,6 +119,8 @@ class SolverCeres : public SolverManager
 
         double finalCost() override;
 
+        double totalTime() override;
+
         ceres::Solver::Options& getSolverOptions();
 
         const Eigen::SparseMatrixd computeHessian() const;