https://api.drupal.org/api/drupal/core%21modules%21comment%21src%21CommentInterface.php/function/CommentInterface%3A%3AgetAuthorName/8.9.x
function CommentInterface::getAuthorName | Drupal API
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https://api.drupal.org/api/drupal/core%21modules%21comment%21src%21Entity%21Comment.php/function/Comment%3A%3AgetAuthorName/10
function Comment::getAuthorName | Drupal API
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https://api.drupal.org/api/drupal/7.x/search/getAuthorName
Search for getAuthorName | Drupal API
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