private static void AbstractFactoryDemo()
{
//parent calss object instance is created by its child class.
//the parent class can olny see method that is created that its child us. any child types
//created can not be seen unless it was first created by the parent.
AbstractBikeFactory factory = new RoadBikeFactory();
IBikeFrame bikeFrame = factory.CreateBikeFrame();
//create bike seat method of factory object @return IBikeseat to object bikeseat
//create the Bike part
IBikeSeat bikeSeat = factory.CreateBikeSeat();
//create Bikeseat method of factory object @return IBikeseat to object bikeseat
// shaow what we created and interface object calls the property Bikeseatparts
//bikeseat was created from the class roadseat
//the propeerty of bikeseatparts uses the get to return the string value from roadseat.
Console.WriteLine(bikeFrame.BikeFrameParts);// this is properties
Console.WriteLine(bikeSeat.BikeSeatParts);
}
