input: Write a python function to create a Contact class with methods to get and set name, phone number, and email.
  assert contact.get_name() == "John Doe"
  assert contact.get_phone_number() == "1234567890"
  assert contact.get_email() == "john@example.com"
  assert contact.get_name() == "Jane Doe"
  assert contact.get_phone_number() == "0987654321"
  assert contact.get_email() == "jane@example.com"
output: class Contact:
      def __init__(self, name, phone_number, email):
          self.name = name
          self.phone_number = phone_number
          self.email = email
  
      def get_name(self):
          return self.name
  
      def set_name(self, name):
          self.name = name
  
      def get_phone_number(self):
          return self.phone_number
  
      def set_phone_number(self, phone_number):
          self.phone_number = phone_number
  
      def get_email(self):
          return self.email
  
      def set_email(self, email):
          self.email = email
  
  # Example usage:
  contact = Contact("John Doe", "1234567890", "john@example.com")
  assert contact.get_name() == "John Doe"
  assert contact.get_phone_number() == "1234567890"
  assert contact.get_email() == "john@example.com"
  
  contact.set_name("Jane Doe")
  contact.set_phone_number("0987654321")
  contact.set_email("jane@example.com")
  assert contact.get_name() == "Jane Doe"
  assert contact.get_phone_number() == "0987654321"
  assert contact.get_email() == "jane@example.com"