/usr/include/KF5/Akonadi/KMime/SpecialMailCollectionsRequestJob is in libkf5akonadimime-dev 4:17.12.3-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 | #include "akonadi/kmime/specialmailcollectionsrequestjob.h"
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