/usr/share/doc/libflexdock-java-doc/api/org/flexdock/perspective/restore/handlers/ is in libflexdock-java-doc 1.2.4-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/doc/libflexdock-java-doc/api/org/flexdock/perspective/restore/handlers/AlreadyRestoredHandler.html
/usr/share/doc/libflexdock-java-doc/api/org/flexdock/perspective/restore/handlers/DockPathHandler.html
/usr/share/doc/libflexdock-java-doc/api/org/flexdock/perspective/restore/handlers/FloatingHandler.html
/usr/share/doc/libflexdock-java-doc/api/org/flexdock/perspective/restore/handlers/MinimizedHandler.html
/usr/share/doc/libflexdock-java-doc/api/org/flexdock/perspective/restore/handlers/PointHandler.html
/usr/share/doc/libflexdock-java-doc/api/org/flexdock/perspective/restore/handlers/RelativeHandler.html
/usr/share/doc/libflexdock-java-doc/api/org/flexdock/perspective/restore/handlers/RestorationHandler.html
/usr/share/doc/libflexdock-java-doc/api/org/flexdock/perspective/restore/handlers/UnknownStateHandler.html
/usr/share/doc/libflexdock-java-doc/api/org/flexdock/perspective/restore/handlers/package-frame.html
/usr/share/doc/libflexdock-java-doc/api/org/flexdock/perspective/restore/handlers/package-summary.html
/usr/share/doc/libflexdock-java-doc/api/org/flexdock/perspective/restore/handlers/package-tree.html