Index: Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Plugin.Test/TreeNodeInfos/MacroStabilityInwardsCalculationGroupContextTreeNodeInfoTest.cs
===================================================================
diff -u -rb7c9234daf5a52422362a7cb3fa1f46a86df63bb -rcf98e706be0f7385dcf2082da2fe615e7c66f44e
--- Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Plugin.Test/TreeNodeInfos/MacroStabilityInwardsCalculationGroupContextTreeNodeInfoTest.cs	(.../MacroStabilityInwardsCalculationGroupContextTreeNodeInfoTest.cs)	(revision b7c9234daf5a52422362a7cb3fa1f46a86df63bb)
+++ Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Plugin.Test/TreeNodeInfos/MacroStabilityInwardsCalculationGroupContextTreeNodeInfoTest.cs	(.../MacroStabilityInwardsCalculationGroupContextTreeNodeInfoTest.cs)	(revision cf98e706be0f7385dcf2082da2fe615e7c66f44e)
@@ -1091,18 +1091,20 @@
                     surfaceLine1,
                     surfaceLine2
                 };
-                failureMechanism.AddSectionResult(new FailureMechanismSection("Section 1", new List<Point2D>
+                failureMechanism.AddSections(new[]
                 {
-                    new Point2D(0.0, 0.0),
-                    new Point2D(5.0, 0.0)
-                }));
+                    new FailureMechanismSection("Section 1", new List<Point2D>
+                    {
+                        new Point2D(0.0, 0.0),
+                        new Point2D(5.0, 0.0)
+                    }),
+                    new FailureMechanismSection("Section 2", new List<Point2D>
+                    {
+                        new Point2D(5.0, 0.0),
+                        new Point2D(10.0, 0.0)
+                    })
+                });
 
-                failureMechanism.AddSectionResult(new FailureMechanismSection("Section 2", new List<Point2D>
-                {
-                    new Point2D(5.0, 0.0),
-                    new Point2D(10.0, 0.0)
-                }));
-
                 var nodeData = new MacroStabilityInwardsCalculationGroupContext(failureMechanism.CalculationsGroup,
                                                                                 null,
                                                                                 surfaceLines,
@@ -1200,18 +1202,20 @@
                     surfaceLine1,
                     surfaceLine2
                 };
-                failureMechanism.AddSectionResult(new FailureMechanismSection("Section 1", new List<Point2D>
+                failureMechanism.AddSections(new[]
                 {
-                    new Point2D(0.0, 0.0),
-                    new Point2D(5.0, 0.0)
-                }));
+                    new FailureMechanismSection("Section 1", new List<Point2D>
+                    {
+                        new Point2D(0.0, 0.0),
+                        new Point2D(5.0, 0.0)
+                    }),
+                    new FailureMechanismSection("Section 2", new List<Point2D>
+                    {
+                        new Point2D(5.0, 0.0),
+                        new Point2D(10.0, 0.0)
+                    })
+                });
 
-                failureMechanism.AddSectionResult(new FailureMechanismSection("Section 2", new List<Point2D>
-                {
-                    new Point2D(5.0, 0.0),
-                    new Point2D(10.0, 0.0)
-                }));
-
                 var nodeData = new MacroStabilityInwardsCalculationGroupContext(group,
                                                                                 null,
                                                                                 surfaceLines,