From cfeaf7614c62bc0d6db79cbfd871fe2d1b036ddb Mon Sep 17 00:00:00 2001
From: samreid <reids@colorado.edu>
Date: Fri, 2 Oct 2020 14:05:46 -0600
Subject: [PATCH] Migrate from ObservableArray => createObservableArray
 (Proxy), see https://github.com/phetsims/axon/issues/336

---
 js/common/model/DensityBuoyancyModel.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/js/common/model/DensityBuoyancyModel.js b/js/common/model/DensityBuoyancyModel.js
index 5a9e8977..a44c00aa 100644
--- a/js/common/model/DensityBuoyancyModel.js
+++ b/js/common/model/DensityBuoyancyModel.js
@@ -8,7 +8,7 @@
 
 import BooleanProperty from '../../../../axon/js/BooleanProperty.js';
 import DerivedProperty from '../../../../axon/js/DerivedProperty.js';
-import ObservableArray from '../../../../axon/js/ObservableArray.js';
+import createObservableArray from '../../../../axon/js/createObservableArray.js';
 import Property from '../../../../axon/js/Property.js';
 import Bounds3 from '../../../../dot/js/Bounds3.js';
 import Vector2 from '../../../../dot/js/Vector2.js';
@@ -129,7 +129,7 @@ class DensityBuoyancyModel {
     this.engine.addBody( this.barrierBody );
 
     // @public {ObservableArray.<Mass>}
-    this.masses = new ObservableArray();
+    this.masses = createObservableArray();
     this.masses.addItemAddedListener( mass => {
       this.engine.addBody( mass.body );
     } );