/usr/include/repro/monkeys/ is in libresiprocate-1.9-dev 1.9.6-1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/repro/monkeys/AmIResponsible.hxx
/usr/include/repro/monkeys/CertificateAuthenticator.hxx
/usr/include/repro/monkeys/ConstantLocationMonkey.hxx
/usr/include/repro/monkeys/CookieAuthenticator.hxx
/usr/include/repro/monkeys/DigestAuthenticator.hxx
/usr/include/repro/monkeys/GeoProximityTargetSorter.hxx
/usr/include/repro/monkeys/GruuMonkey.hxx
/usr/include/repro/monkeys/IsTrustedNode.hxx
/usr/include/repro/monkeys/LocationServer.hxx
/usr/include/repro/monkeys/MessageSilo.hxx
/usr/include/repro/monkeys/OutboundTargetHandler.hxx
/usr/include/repro/monkeys/QValueTargetHandler.hxx
/usr/include/repro/monkeys/RADIUSAuthenticator.hxx
/usr/include/repro/monkeys/RecursiveRedirect.hxx
/usr/include/repro/monkeys/RequestFilter.hxx
/usr/include/repro/monkeys/SimpleStaticRoute.hxx
/usr/include/repro/monkeys/SimpleTargetHandler.hxx
/usr/include/repro/monkeys/StaticRoute.hxx
/usr/include/repro/monkeys/StrictRouteFixup.hxx