From 08d725c328861f82d31a51c2b0dd512c939a08e7 Mon Sep 17 00:00:00 2001
From: emvivre <emvivre@urdn.com.ua>
Date: Sat, 8 Apr 2017 22:14:46 +0200
Subject: [PATCH 1/2] Fix a typo bug in HelloWall/HelloWallExample.cs

---
 HelloWall/HelloWallExample.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/HelloWall/HelloWallExample.cs b/HelloWall/HelloWallExample.cs
index a10efcc..06a010e 100644
--- a/HelloWall/HelloWallExample.cs
+++ b/HelloWall/HelloWallExample.cs
@@ -108,7 +108,7 @@ private static IfcBuilding CreateBuilding(IfcStore model, string name)
                 placement.Location = model.Instances.New<IfcCartesianPoint>(p=>p.SetXYZ(0,0,0));
                 //get the project there should only be one and it should exist
                 var project = model.Instances.OfType<IfcProject>().FirstOrDefault();
-                project?.AddBuilding(building);
+                project.AddBuilding(building);
                 txn.Commit();
                 return building;                               
             }          

From 845fe99082e58d38b7cb716640ea5877e01ca89a Mon Sep 17 00:00:00 2001
From: emvivre <emvivre@urdn.com.ua>
Date: Sat, 8 Apr 2017 22:20:06 +0200
Subject: [PATCH 2/2] Remove useless variable in HelloWallExample.cs

---
 HelloWall/HelloWallExample.cs | 11 +----------
 1 file changed, 1 insertion(+), 10 deletions(-)

diff --git a/HelloWall/HelloWallExample.cs b/HelloWall/HelloWallExample.cs
index 06a010e..b8445ce 100644
--- a/HelloWall/HelloWallExample.cs
+++ b/HelloWall/HelloWallExample.cs
@@ -379,16 +379,7 @@ private static void CreateSimpleProperty(IfcStore model, IfcWallStandardCase wal
                 prv.Name = "IfcPropertyReferenceValue:Material";
                 prv.PropertyReference = ifcMaterial;
             });
-            
-          
-            var ifcMaterialList = model.Instances.New<IfcMaterialList>(ml =>
-                {
-                    ml.Materials.Add(ifcMaterial);
-                    ml.Materials.Add(model.Instances.New<IfcMaterial>(m =>{m.Name = "Cavity";}));
-                    ml.Materials.Add(model.Instances.New<IfcMaterial>(m => { m.Name = "Block"; }));
-                });
-                     
-        
+                              
             var ifcMaterialLayer = model.Instances.New<IfcMaterialLayer>(ml =>
             {
                 ml.Material = ifcMaterial;