Create an an empty mixed-integer linear programming model that is about 1000 times faster than `MIPModel`.
Details
Please only use it if you can deal with potential API changes in the future. When you use `MILPModel` make sure to always model your problem with `MIPModel` as well, just to make sure you get the same results.
It is also always a good idea to test your model with very small input sizes and examine the coefficients and rows of the constraint matrix.