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src/_VisualDVM/ProjectData/SapforData/Functions/Json/FunctionGraphPositionJson.java

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+package _VisualDVM.ProjectData.SapforData.Functions.Json;
+import com.google.gson.annotations.Expose;
+public class FunctionGraphPositionJson {
+    @Expose
+    public String functionName;
+    @Expose
+    public double x;
+    @Expose
+    public double y;
+}

src/_VisualDVM/ProjectData/SapforData/Functions/Json/FunctionsGraphPositionsJson.java

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+package _VisualDVM.ProjectData.SapforData.Functions.Json;
+import com.google.gson.annotations.Expose;
+
+import java.util.List;
+import java.util.Vector;
+public class FunctionsGraphPositionsJson {
+    @Expose
+    public List<FunctionGraphPositionJson> allPositions = new Vector<>();
+}

src/_VisualDVM/ProjectData/SapforData/Functions/Json/FunctionsGraphSettingsJson.java

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+package _VisualDVM.ProjectData.SapforData.Functions.Json;
+import java.util.List;
+import java.util.Vector;
+public class FunctionsGraphSettingsJson {
+    public int x;
+    public int y;
+    public int iterations;
+    public int resistance;
+    public List<String> visibleFunctionsNames = new Vector<>();
+}