Breaking: #77587 - Removed LiveSearch->getQueryString 

See forge#77587

Description 

The public utility method getQueryString() within the LiveSearch PHP class has been removed.

Impact 

Calling the method directly will result in a PHP fatal error.

Affected Installations 

Any installation extending TYPO3's internal LiveSearch functionality via an extension.

Migration 

Use one of the various quoting options shipped with the Doctrine DBAL.