Once upon a time, there was a tree in a forest. This tree was a complex structure with leaves and branches. Each branch could have smaller branches and leaves on it. The tree worked as a whole, holding its branches and leaves together. This tree is an example of the Composite design pattern. The tree (Composite) contains two types of components: branches (also Composite) and leaves (Leaf). Both branches and leaves implement the same interface (Component) recognized by the tree.
