4.1.5
The following APIs have been deprecated and will be removed in v5.
Diff::setA()
becomesDiff::setOld()
.Diff::setB()
becomesDiff::setNew()
.Diff::setAB()
becomesDiff::setOldNew()
.Diff::getA()
becomesDiff::getOld()
.Diff::getB()
becomesDiff::getNew()
.