This file is indexed.

/usr/include/KF5/KFileMetaData/KFileMetaData/ExtractionResult is in libkf5filemetadata-dev 5.18.0-0ubuntu1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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#include "kfilemetadata/extractionresult.h"