# This class can be used as it to work with generic trees but can also be specialized to provide more specific
# behavior or display. It is why the internal attributes are mutable.
class OrderedTree[E: Object]
# This class can be used as it to work with generic trees but can also be specialized to provide more specific
# behavior or display. It is why the internal attributes are mutable.
class OrderedTree[E: Object]
# print the full tree on `o`
# Write a ASCII-style tree and use the `display` method to label elements
# print the full tree on `o`
# Write a ASCII-style tree and use the `display` method to label elements