input: Write a python function to create an Employee object, set its attributes using the provided methods, and then display the employee's information.
  assert create_employee("Alice", 30, 70000, "Developer") == "Name: Alice\nAge: 30\nSalary: 70000\nRole: Developer"
  assert create_employee("Bob", 45, 120000, "Manager") == "Name: Bob\nAge: 45\nSalary: 120000\nRole: Manager"
  assert create_employee("Charlie", 25, 50000, "Intern") == "Name: Charlie\nAge: 25\nSalary: 50000\nRole: Intern"
output: class Employee:
      def set_name(self, name):
          self.name = name
  
      def set_age(self, age):
          self.age = age
  
      def set_salary(self, salary):
          self.salary = salary
  
      def set_role(self, role):
          self.role = role
  
      def display(self):
          return f"Name: {self.name}\nAge: {self.age}\nSalary: {self.salary}\nRole: {self.role}"
  
  def create_employee(name, age, salary, role):
      emp = Employee()
      emp.set_name(name)
      emp.set_age(age)
      emp.set_salary(salary)
      emp.set_role(role)
      return emp.display()