[ZODB-Dev] Nearest Neighbors with OOBTree

[Chris S]

Is there a way to determine the nearest neighbors to a key in an
OOBTree? Something like:

>>> from BTrees.OOBTree import OOBTree
>>> tree = OOBTree(dict(a=1, b=2, c=3, d=4))
>>> tree.nearestLowItem('b')
('a',1)
>>> tree.nearestHighItem('b')
('c',3)