From b35cee4b9605268a50aa97eadc2294854b953c35 Mon Sep 17 00:00:00 2001
From: odow <o.dowson@gmail.com>
Date: Fri, 7 May 2021 15:41:37 +1200
Subject: [PATCH] WIP: fix nesting of SingleBridgeOptimizer

---
 src/Bridges/Constraint/single_bridge_optimizer.jl | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/Bridges/Constraint/single_bridge_optimizer.jl b/src/Bridges/Constraint/single_bridge_optimizer.jl
index 60e10bdac4..993d781db6 100644
--- a/src/Bridges/Constraint/single_bridge_optimizer.jl
+++ b/src/Bridges/Constraint/single_bridge_optimizer.jl
@@ -76,3 +76,10 @@ function MOIB.bridge_type(
     return BT
 end
 MOIB.bridging_cost(::SingleBridgeOptimizer, args...) = 1.0
+
+function MOIB.is_bridged(
+    b::SingleBridgeOptimizer,
+    ci::MOI.ConstraintIndex{MOI.VectorOfVariables,S},
+) where {S}
+    return ci.value < 0 && haskey(bridges(b), ci)
+end