input: Write a python function to create an instance of the Car class and test its methods.
  assert car1.get_make() == "Toyota"
  assert car1.get_model() == "Corolla"
  assert car1.get_year() == 2020
  car1.set_make("Honda")
  car1.set_model("Civic")
  car1.set_year(2022)
  assert car1.get_make() == "Honda"
  assert car1.get_model() == "Civic"
  assert car1.get_year() == 2022
output: class Car:
      def __init__(self, make, model, year):
          self._make = make
          self._model = model
          self._year = year
  
      def get_make(self):
          return self._make
  
      def get_model(self):
          return self._model
  
      def get_year(self):
          return self._year
  
      def set_make(self, make):
          self._make = make
  
      def set_model(self, model):
          self._model = model
  
      def set_year(self, year):
          self._year = year
  
  def test_car_class():
      car1 = Car("Toyota", "Corolla", 2020)
      assert car1.get_make() == "Toyota"
      assert car1.get_model() == "Corolla"
      assert car1.get_year() == 2020
      car1.set_make("Honda")
      car1.set_model("Civic")
      car1.set_year(2022)
      assert car1.get_make() == "Honda"
      assert car1.get_model() == "Civic"
      assert car1.get_year() == 2022