input: Write a python function to create a Student object and retrieve its course using the getCourse method.
  assert get_student_course("John", 20, "Mathematics") == "Mathematics"
  assert get_student_course("Alice", 22, "Physics") == "Physics"
  assert get_student_course("Bob", 21, "Chemistry") == "Chemistry"
output: def get_student_course(name, age, course):
      class Student:
          def __init__(self, name, age, course):
              self.name = name
              self.age = age
              self.course = course
          
          def getCourse(self):
              return self.course
      
      student = Student(name, age, course)
      return student.getCourse()