even Branches iThis checkpoint assessment is to be completed individually. Write a method even Branches that returns the number of branch nodes in a binary tree that contain even numbers. A branch node is one that has one or two children (i.e., not a leaf node). For example, if a variable tree stores a reference to the following tree: +111+ / ☐☐ | 8 | +---- +---+ | 2 | + ☐☐ [EL 4 6 | 9 | ++ Then the call tree.even Branches(); should return 3 because there are three branch nodes with even values (2, 8, and 6). Notice that the leaf nodes with even values are not included (the nodes storing and 4).