Creates objects of one family without using class names. It is done by specially created method called factoryMethod
which allows to hide implementation details in subclasses - subclasses decide which real object (implementation) should be created.
Example:
A parent asks a child for help when buying a TV. He uses general term "TV" because children are the ones that are experts in that field,
they know all the specifics but hide them from their parents - they do not explain the specifics which parents do not want to know,
instead they choose a product adequate for them. A parent trusts his child, and believes that the child will choose the TV
which will fulfil his needs.
