make private

src/main/java/gov/usgs/earthquake/nshmp/calc/GroundMotionToCurveLambda.java

@@ -111,14 +111,14 @@ public class GroundMotionToCurveLambda implements RequestStreamHandler {
      * @see GroundMotionToCurveLambda#groundMotionsToCurvesHandler
      */
     static class Builder {
-      ExceedanceModel exceedanceModel;
-      Gmm gmm;
-      Imt imt;
-      LogicTree<GroundMotion> logicTree;
-      double rate;
-      double truncationLevel;
-      MutableXySequence utilCurve;
-      double σScale;
+      private ExceedanceModel exceedanceModel;
+      private Gmm gmm;
+      private Imt imt;
+      private LogicTree<GroundMotion> logicTree;
+      private double rate;
+      private double truncationLevel;
+      private MutableXySequence utilCurve;
+      private double σScale;
 
       private Builder() {}