/usr/ is in libnautilus-extension-dev 3.22.3-1+deb9u1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/
/usr/include/nautilus/
/usr/include/nautilus/libnautilus-extension/
/usr/include/nautilus/libnautilus-extension/nautilus-column-provider.h
/usr/include/nautilus/libnautilus-extension/nautilus-column.h
/usr/include/nautilus/libnautilus-extension/nautilus-extension-types.h
/usr/include/nautilus/libnautilus-extension/nautilus-file-info.h
/usr/include/nautilus/libnautilus-extension/nautilus-info-provider.h
/usr/include/nautilus/libnautilus-extension/nautilus-location-widget-provider.h
/usr/include/nautilus/libnautilus-extension/nautilus-menu-item.h
/usr/include/nautilus/libnautilus-extension/nautilus-menu-provider.h
/usr/include/nautilus/libnautilus-extension/nautilus-menu.h
/usr/include/nautilus/libnautilus-extension/nautilus-property-page-provider.h
/usr/include/nautilus/libnautilus-extension/nautilus-property-page.h
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/libnautilus-extension.pc
/usr/share/
/usr/share/doc/
/usr/share/doc/libnautilus-extension-dev/
/usr/share/doc/libnautilus-extension-dev/changelog.Debian.gz
/usr/share/doc/libnautilus-extension-dev/copyright
/usr/share/gir-1.0/
/usr/share/gir-1.0/Nautilus-3.0.gir
/usr/share/gtk-doc/
/usr/share/gtk-doc/html/
/usr/share/gtk-doc/html/libnautilus-extension/
/usr/share/gtk-doc/html/libnautilus-extension/NautilusColumn.html
/usr/share/gtk-doc/html/libnautilus-extension/NautilusColumnProvider.html
/usr/share/gtk-doc/html/libnautilus-extension/NautilusFileInfo.html
/usr/share/gtk-doc/html/libnautilus-extension/NautilusInfoProvider.html
/usr/share/gtk-doc/html/libnautilus-extension/NautilusLocationWidgetProvider.html
/usr/share/gtk-doc/html/libnautilus-extension/NautilusMenu.html
/usr/share/gtk-doc/html/libnautilus-extension/NautilusMenuItem.html
/usr/share/gtk-doc/html/libnautilus-extension/NautilusMenuProvider.html
/usr/share/gtk-doc/html/libnautilus-extension/NautilusPropertyPage.html
/usr/share/gtk-doc/html/libnautilus-extension/NautilusPropertyPageProvider.html
/usr/share/gtk-doc/html/libnautilus-extension/ch01.html
/usr/share/gtk-doc/html/libnautilus-extension/home.png
/usr/share/gtk-doc/html/libnautilus-extension/index.html
/usr/share/gtk-doc/html/libnautilus-extension/ix01.html
/usr/share/gtk-doc/html/libnautilus-extension/left-insensitive.png
/usr/share/gtk-doc/html/libnautilus-extension/left.png
/usr/share/gtk-doc/html/libnautilus-extension/libnautilus-extension-NautilusModule.html
/usr/share/gtk-doc/html/libnautilus-extension/libnautilus-extension.devhelp2
/usr/share/gtk-doc/html/libnautilus-extension/pt01.html
/usr/share/gtk-doc/html/libnautilus-extension/right-insensitive.png
/usr/share/gtk-doc/html/libnautilus-extension/right.png
/usr/share/gtk-doc/html/libnautilus-extension/style.css
/usr/share/gtk-doc/html/libnautilus-extension/up-insensitive.png
/usr/share/gtk-doc/html/libnautilus-extension/up.png
/usr/lib/x86_64-linux-gnu/libnautilus-extension.so