input: Write a python function to create a Student object and test its methods.
  assert create_student('John', 20, 'Male').get_name() == 'John'
  assert create_student('John', 20, 'Male').get_age() == 20
  assert create_student('John', 20, 'Male').get_gender() == 'Male'
  assert create_student('Alice', 22, 'Female').get_name() == 'Alice'
  assert create_student('Alice', 22, 'Female').get_age() == 22
  assert create_student('Alice', 22, 'Female').get_gender() == 'Female'
output: class Student:
      def __init__(self, name, age, gender):
          self._name = name
          self._age = age
          self._gender = gender
  
      def get_name(self):
          return self._name
  
      def get_age(self):
          return self._age
  
      def get_gender(self):
          return self._gender
  
  def create_student(name, age, gender):
      return Student(name, age, gender)