Message10175

This was a backwards breaking change to make objects implementing java.util.Map behave as if they are dict-like, and therefore satisfy the contract of https://docs.python.org/2/library/collections.html#collections.MutableMapping:

$ jython27
Jython 2.7.0 (default:9987c746f838, Apr 29 2015, 02:25:11)
[Java HotSpot(TM) 64-Bit Server VM (Oracle Corporation)] on java1.8.0_45
Type "help", "copyright", "credits" or "license" for more information.
>>> import java
>>> m = java.util.HashMap()
>>> from collections import MutableMapping
>>> isinstance(m, MutableMapping)
True

See https://hg.python.org/jython/rev/864bbec6ddb5