h will select a specific implementation, and will also
impact the interpretation of the model (i.e. are we solving the problem
as a mixed integer program or are we relaxing it as a continuous linear
program?).
This must remain consistent with <a class="el" href="enumcom_1_1google_1_1ortools_1_1linearsolver_1_1MPSolver_1_1OptimizationProblemType.html" title="The type of problems (LP or MIP) that will be solved and the underlying  solver (GLOP,...">MPSolver::OptimizationProblemType</a>.
</pre><p>Protobuf enum