code: def fill_login_form(self, username, username_field, user_password,
                          user_password_field):
          
          self.fill_form_field(username_field, username)  # set username
          self.fill_form_field(user_password_field, user_password)
docs: Fills form with login info
  
          :param username: user login
          :param username_field: name of field to fill with username
          :param user_password: login password
          :param user_password_field: name of field to fill with user password