All Test Was Repaired

StructureHelperLogics/Models/Materials/IHasHeadMaterials.cs

@@ -0,0 +1,14 @@
+using StructureHelper.Models.Materials;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StructureHelperLogics.Models.Materials
+{
+    public interface IHasHeadMaterials
+    {
+        List<IHeadMaterial> HeadMaterials { get; }
+    }
+}