Copy_model() equivalent for BilevelJuMP.jl

Specific Domains Optimization (Mathematical)
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4

If you have a JuMP model, you probably had a function (or many) that built that.
For instance:

function model_builder()
    model = Model()
    # add variables and constraints
    return model
end
model = model_builder()

You could change to:

model = Model()
function model_builder(model)
    # add variables and constraints
    return
end
model_builder(model)
# at this point `model` would be equivalent to the first version

you can re-use the builder for the lower level of a bilvel problem like this:

model = BilevelModel(...)
function model_builder(model)
    # add variables and constraints
    return
end
model_builder(Lower(model))
# this would load the lower level

In this case you don’t even need to pre-build a model an use a copy. Just re-use a builder function.

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