public void un_mortgage_property(Player player)
        {
            string sprompt = string.Format("Please select a property to un-mortgage:", this.playerPrompt(player));
            // getPropertiesOwnedAndMortgaged() had to be created to allow us to get a list of all mortgaged properties
            //owned by the current player
            Property selected_property = this.displayPropertyChooser(player.getPropertiesOwnedAndMortgaged(), sprompt);

            //check that the player has mortgaged properties

            if (player.getPropertiesOwnedAndMortgaged().Count == 0)
            {

                Console.WriteLine("You have not mortgaged any properties  ", playerPrompt(player));
            }

            selected_property.unMortgageProperty();
        }