[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:  new
 Priority:  normal       |   Milestone:  Awaiting Review
Component:  General      |     Version:
 Severity:  normal       |  Resolution:
 Keywords:  has-patch    |     Focuses:  docs, coding-standards
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Comment (by johannadevos):

 Having read this discussion and having inspected the
 [https://github.com/WordPress/wordpress-develop/pull/523/ accompanying
 PR], I would say it is ready to be merged:
 * The [https://github.com/WordPress/wordpress-develop/pull/523/ feedback]
 from @johnbillion has been taken into account.
 * An alternative description has been provided.

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Ticket URL: <https://core.trac.wordpress.org/ticket/51278#comment:4>
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