ARNING: if you set this on a request to prod servers, it will be rejected
and yield the RPC Application Error code MPSOLVER_SOLVER_TYPE_UNAVAILABLE.
</pre><p><code>optional bool enable_internal_solver_output = 4 [default = false];</code> </p><dl class="section return"><dt>Returns</dt><dd>Whether the enableInternalSolverOutput field is set. </dd></dl>

<p>Implemented in <a class="el" href="classcom_1_1google_1_1ortools_1_1linearsolver_1_1MPModelRequest_1_1Builder.html#a75654e6c5a2651ad9360ae0ad101db07">MPMod