Github user asfgit closed the pull request at:
https://github.com/apache/commons-lang/pull/13
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GitHub user patrick-a-cavanaugh opened a pull request:
https://github.com/apache/commons-lang/pull/13
Update ImmutablePair to be not final
The sibling class MutablePair is not final, and the JavaDoc for
ImmutablePair also states it is not final: "The class is also not {@code
final}