XXXDetTriangle bridge does not support ConstraintFunction

[odow]

Found during jump-dev/SCS.jl#219

optimizer = SCS.Optimizer()
MOI.set(optimizer, MOI.Silent(), true)
model = MOI.Bridges.full_bridge_optimizer(
    MOI.Utilities.CachingOptimizer(
        MOI.Utilities.UniversalFallback(MOI.Utilities.Model{Float64}()),
        optimizer,
    ),
    Float64,
)

julia> MOI.Test.test_basic_VectorAffineFunction_LogDetConeTriangle(model, config)
Error During Test at /Users/oscar/.julia/dev/MathOptInterface/src/Test/test_basic_constraint.jl:168
  Test threw exception
  Expression: MOI.get(model, MOI.ConstraintFunction(), c) ≈ constraint_function
  ArgumentError: Bridge of type `MathOptInterface.Bridges.Constraint.LogDetBridge{Float64}` does not support accessing the attribute `MathOptInterface.ConstraintFunction()`. If you encountered this error unexpectedly, it probably means your model has been reformulated using the bridge, and you are attempting to query an attribute that we haven't implemented yet for this bridge. Please open an issue at https://github.com/jump-dev/MathOptInterface.jl/issues/new and provide a reproducible example explaining what you were trying to do.
  Stacktrace:

julia> MOI.Test.test_basic_VectorAffineFunction_RootDetConeTriangle(model, config)
Error During Test at /Users/oscar/.julia/dev/MathOptInterface/src/Test/test_basic_constraint.jl:168
  Test threw exception
  Expression: MOI.get(model, MOI.ConstraintFunction(), c) ≈ constraint_function
  ArgumentError: Bridge of type `MathOptInterface.Bridges.Constraint.RootDetBridge{Float64}` does not support accessing the attribute `MathOptInterface.ConstraintFunction()`. If you encountered this error unexpectedly, it probably means your model has been reformulated using the bridge, and you are attempting to query an attribute that we haven't implemented yet for this bridge. Please open an issue at https://github.com/jump-dev/MathOptInterface.jl/issues/new and provide a reproducible example explaining what you were trying to do.
  Stacktrace:

julia> MOI.Test.test_basic_VectorOfVariables_LogDetConeTriangle(model, config)
Error During Test at /Users/oscar/.julia/dev/MathOptInterface/src/Test/test_basic_constraint.jl:168
  Test threw exception
  Expression: MOI.get(model, MOI.ConstraintFunction(), c) ≈ constraint_function
  ArgumentError: Bridge of type `MathOptInterface.Bridges.Constraint.LogDetBridge{Float64}` does not support accessing the attribute `MathOptInterface.ConstraintFunction()`. If you encountered this error unexpectedly, it probably means your model has been reformulated using the bridge, and you are attempting to query an attribute that we haven't implemented yet for this bridge. Please open an issue at https://github.com/jump-dev/MathOptInterface.jl/issues/new and provide a reproducible example explaining what you were trying to do.
  Stacktrace:

julia> MOI.Test.test_basic_VectorOfVariables_RootDetConeTriangle(model, config)
Error During Test at /Users/oscar/.julia/dev/MathOptInterface/src/Test/test_basic_constraint.jl:168
  Test threw exception
  Expression: MOI.get(model, MOI.ConstraintFunction(), c) ≈ constraint_function
  ArgumentError: Bridge of type `MathOptInterface.Bridges.Constraint.RootDetBridge{Float64}` does not support accessing the attribute `MathOptInterface.ConstraintFunction()`. If you encountered this error unexpectedly, it probably means your model has been reformulated using the bridge, and you are attempting to query an attribute that we haven't implemented yet for this bridge. Please open an issue at https://github.com/jump-dev/MathOptInterface.jl/issues/new and provide a reproducible example explaining what you were trying to do.
  Stacktrace:

[odow]

@blegat it looks like implementing this would require us to cache the function inside the bridge. Is that something we want to do? Or is getting the constraint function through a DetBridge low priority?