// It is a discipline That may be different in Every instance of a category personal int _field; // This can be a property that accesses a area, but since it's visibility // is protected only subclasses will know concerning this property // (and through it the field) - https://propertyingurugram.in/indiabulls-enterprises-sells-1000-crore-worth-of-gurugram-project-units-in-30-days-of-launch/