BUG-2377: introduce internal UnmodifiableChildrenMap
This new class acts a replacement of java.util.Collection's version of
the same. Unlike the standard class, this one does not retain cached
versions of keySet and entrySet, since those are unused anyway. We can
also perform an instanceof check, which should speed up operations.
Finally, we check for map emptiness and use Collections.emptyMap()
when possible.
Change-Id: I84c8ac428d6b207fafccf8cc898f0555b104a4ee
Signed-off-by: Robert Varga <rovarga@cisco.com>
Code Review / yangtools.git / commit