/usr/ is in libhud-client2-dev 14.10+16.04.20160415-0ubuntu1.
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..
/usr/include/
/usr/include/libhud-client-2/
/usr/include/libhud-client-2/libhud-client/
/usr/lib/x86_64-linux-gnu/libhud-client.so
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/hud-client-2.pc
/usr/include/libhud-client-2/libhud-client/param.h
/usr/include/libhud-client-2/libhud-client/query-columns.h
/usr/include/libhud-client-2/libhud-client/connection.h
/usr/include/libhud-client-2/libhud-client/HudToolbarModel.h
/usr/include/libhud-client-2/libhud-client/query.h
/usr/include/libhud-client-2/libhud-client/toolbar-items.h
/usr/include/libhud-client-2/libhud-client/HudClient.h
/usr/include/libhud-client-2/libhud-client/enum-types.h
/usr/include/libhud-client-2/hud-client.h
/usr/share/
/usr/share/gir-1.0/
/usr/share/gir-1.0/HudClient-2.gir
/usr/share/doc/
/usr/share/doc/libhud-client2-dev/
/usr/share/doc/libhud-client2-dev/copyright
/usr/share/vala/
/usr/share/vala/vapi/
/usr/share/vala/vapi/HudClient-2.vapi
/usr/share/doc/libhud-client2-dev/changelog.Debian.gz