Exception: Add exception with message box for not implement method.

src/Model/Geometry/PointXYZ.py

@@ -50,6 +50,9 @@ class PointXYZ(Point):
                 isna(self.y) or
                 isna(self.z))
 
+    def dist(self, p2):
+        return PointXYZ.distance(self, p2)
+
     @staticmethod
     def distance(p1, p2):
         """Euclidean distance between p1 and p2.