/usr/include/openwsman/ is in libopenwsman-dev 2.4.3-0ubuntu4.
This file is owned by root:root, with mode 0o755.
..
/usr/include/openwsman/cim/
/usr/include/openwsman/cim/cim-interface.h
/usr/include/openwsman/u/
/usr/include/openwsman/u/base64.h
/usr/include/openwsman/u/buf.h
/usr/include/openwsman/u/carpal.h
/usr/include/openwsman/u/debug.h
/usr/include/openwsman/u/debug_internal.h
/usr/include/openwsman/u/gettimeofday.h
/usr/include/openwsman/u/hash.h
/usr/include/openwsman/u/iniparser.h
/usr/include/openwsman/u/libu.h
/usr/include/openwsman/u/list.h
/usr/include/openwsman/u/lock.h
/usr/include/openwsman/u/log.h
/usr/include/openwsman/u/logprv.h
/usr/include/openwsman/u/md5.h
/usr/include/openwsman/u/memory.h
/usr/include/openwsman/u/misc.h
/usr/include/openwsman/u/os.h
/usr/include/openwsman/u/pthreadx.h
/usr/include/openwsman/u/strings.h
/usr/include/openwsman/u/syslog.h
/usr/include/openwsman/u/uerr.h
/usr/include/openwsman/u/uoption.h
/usr/include/openwsman/u/uri.h
/usr/include/openwsman/u/uuid.h
/usr/include/openwsman/wsman-api.h
/usr/include/openwsman/wsman-cimindication-processor.h
/usr/include/openwsman/wsman-client-api.h
/usr/include/openwsman/wsman-client-transport.h
/usr/include/openwsman/wsman-client.h
/usr/include/openwsman/wsman-debug.h
/usr/include/openwsman/wsman-declarations.h
/usr/include/openwsman/wsman-epr.h
/usr/include/openwsman/wsman-event-pool.h
/usr/include/openwsman/wsman-faults.h
/usr/include/openwsman/wsman-filter.h
/usr/include/openwsman/wsman-names.h
/usr/include/openwsman/wsman-server-api.h
/usr/include/openwsman/wsman-soap-envelope.h
/usr/include/openwsman/wsman-soap-message.h
/usr/include/openwsman/wsman-soap.h
/usr/include/openwsman/wsman-subscription-repository.h
/usr/include/openwsman/wsman-types.h
/usr/include/openwsman/wsman-xml-api.h
/usr/include/openwsman/wsman-xml-binding.h
/usr/include/openwsman/wsman-xml-serialize.h
/usr/include/openwsman/wsman-xml-serializer.h
/usr/include/openwsman/wsman-xml.h