Change record status: 
Project: 
Introduced in branch: 
11.4.x
Introduced in version: 
11.4.0
Description: 

CommentItemInterface constants HIDDEN, OPEN and CLOSED are deprecated. Use enum \Drupal\comment\CommentingStatus instead.

Before:

CommentItemInterface::HIDDEN
CommentItemInterface::OPEN
CommentItemInterface::CLOSED

After:

\Drupal\comment\CommentingStatus::Hidden
\Drupal\comment\CommentingStatus::Open
\Drupal\comment\CommentingStatus::Closed
Impacts: 
Module developers