PROTOTYPE Pattern

Context

1. A system instantiates objects of classes that are not known when the system is built.
   
2. You do not want to require a separate class for each kind of object.
   
3. You want to avoid a separate hierarchy of classes whose responsibility it is to create the objects.

Solution

1. Define a prototype interface type that is common to all created objects.
   
2. Supply a prototype object for each kind of object that the system creates.
   
3. Clone the prototype object whenever a new object of the given kind is required.