/usr/include/ is in librest-dev 0.7.92-3.
This file is owned by root:root, with mode 0o755.
..
/usr/include/rest-0.7/
/usr/include/rest-0.7/rest/
/usr/include/rest-0.7/rest/rest-xml-parser.h
/usr/include/rest-0.7/rest/rest-xml-node.h
/usr/include/rest-0.7/rest/oauth2-proxy-call.h
/usr/include/rest-0.7/rest/oauth2-proxy.h
/usr/include/rest-0.7/rest/oauth-proxy-call.h
/usr/include/rest-0.7/rest/oauth-proxy.h
/usr/include/rest-0.7/rest/rest-enum-types.h
/usr/include/rest-0.7/rest/rest-proxy-call.h
/usr/include/rest-0.7/rest/rest-proxy-auth.h
/usr/include/rest-0.7/rest/rest-proxy.h
/usr/include/rest-0.7/rest/rest-params.h
/usr/include/rest-0.7/rest/rest-param.h