The class Student has four private attributes to define its first name, last name, address, and total score. Implement the function getResult based on the logic, if the student score is above 60, it will be Pass and otherwise, it will be Not Pass.

The following test case reveals the use of the class. Define a Python class to match the test case given below.

#Test: Do NOT change this code

s1 = Student()

s1.setFirstName("Ahmad")

s1.setLastName("Salem")

s1.setScore(60)

s1.setAddress("Al Raha Beach")

print(s1.getFullName()) # prints full name example: Ahmed Salem

print(s1.getResult()) # prints Pass or Not Pass 

s2 = Student("Reem", "Saed", 82, "Abu Dhabi")

print(s2.getAddress()) # prints all the details of the student 

print(s2) # Reem Saed, Abu Dhabi, 82, Pass