call a protected static property on an instance of a class in swift

In Swift, you cannot directly access a protected static property on an instance of a class outside of the class hierarchy. However, you can create a getter function for the property in the superclass that returns the value of the protected static property.

Here's an example:

main.swift
class Superclass {
    protected static var protectedStaticProperty = "Hello, World!"
    
    func getProtectedStaticProperty() -> String {
        return type(of: self).protectedStaticProperty
    }
}

class Subclass: Superclass {
    func printProtectedStaticProperty() {
        print(getProtectedStaticProperty())
    }
}

let subclassInstance = Subclass()
subclassInstance.printProtectedStaticProperty() // Output: Hello, World!
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In this example, Superclass has a protected static property protectedStaticProperty, and getProtectedStaticProperty() is a function that returns the value of that property. Subclass inherits from Superclass and can access the protected function getProtectedStaticProperty(). By calling this function on an instance of Subclass, you can indirectly access the protected static property protectedStaticProperty.