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https://issues.apache.org/jira/browse/SOLR-18139?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18064141#comment-18064141
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David Smiley commented on SOLR-18139:
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BTW I had mentioned maybe tackling single-value Set, List, Empty as well, but
then I remembered that there is one semantic difference. The `of` methods
demand non-null parameters. Thus {{Collections.singletonList(null)}}, for
example, accepts a null, whereas {{List.of(null)}} does not. We should still
_prefer_ the `of` when possible but we can't block the singleton methods.
> Remove use of Collections.emptyList() and Collections.emptySet()
> ----------------------------------------------------------------
>
> Key: SOLR-18139
> URL: https://issues.apache.org/jira/browse/SOLR-18139
> Project: Solr
> Issue Type: Wish
> Reporter: Eric Pugh
> Priority: Minor
> Labels: pull-request-available
> Time Spent: 1h 40m
> Remaining Estimate: 0h
>
> [~dsmiley] has frequently mentioned this in PR review, lets get it sorted...
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