[wp-trac] [WordPress Trac] #51278: Update return types to reflect the real return types. Remove mixed.

[WordPress Trac]

#51278: Update return types to reflect the real return types. Remove mixed.
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 Reporter:  ReneHermi               |       Owner:  (none)
     Type:  enhancement             |      Status:  reviewing
 Priority:  normal                  |   Milestone:  5.8
Component:  General                 |     Version:
 Severity:  normal                  |  Resolution:
 Keywords:  has-patch dev-feedback  |     Focuses:  docs, coding-standards
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Comment (by ReneHermi):

 This is only a change of the docBlock. It does not require any UnitTests
 or similar as it does not touch any real code. It just needs a decision by
 a maintainer.

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Ticket URL: <https://core.trac.wordpress.org/ticket/51278#comment:21>
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