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https://issues.apache.org/jira/browse/MNG-6164?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15942021#comment-15942021
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Christian Schulte commented on MNG-6164:
----------------------------------------
Issue is fixed in the master branch of [my private maven repository on
github|https://github.com/ChristianSchulte/maven/tree/master]. When interested,
you can cherry pick the commit to your own repository and create a pull request
for the apache master branch with just this commit yourself from there.
> Collections inconsistently immutable.
> -------------------------------------
>
> Key: MNG-6164
> URL: https://issues.apache.org/jira/browse/MNG-6164
> Project: Maven
> Issue Type: Bug
> Reporter: Christian Schulte
> Priority: Critical
> Fix For: 3.5.1-candidate
>
>
> There are plenty of places where empty collections are returned from public
> API methods like:
> {code}
> public List<Exception> getExceptions()
> {
> return exceptions == null ? Collections.<Exception> emptyList() :
> exceptions;
> }
> {code}
> The issue with this is that the empty list is immutable but the collection
> returned for the nun-null case is not immutable. All those methods should
> return an immutable collection consistently.
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