old_contents: 
  """ User: """
  class User(object):
    def __init__(self, access_token = None, refresh_token = None,
                  token_expires = None, code = None):
      self.access_token = access_token
      self.refresh_token = refresh_token
      self.token_expires = token_expires
      self.code = code
  
  
new_contents: 
  """ User: """
  class User(object):
    def __init__(self, access_token = None, refresh_token = None,
                  token_expires = None):
      self.access_token = access_token
      self.refresh_token = refresh_token
      self.token_expires = token_expires
  
  
subject: Update user.py