/usr/include/ is in libepc-dev 0.4.4-3.
This file is owned by root:root, with mode 0o755.
..
/usr/include/libepc-1.0/
/usr/include/libepc-1.0/libepc/
/usr/include/libepc-1.0/libepc/tls.h
/usr/include/libepc-1.0/libepc/shell.h
/usr/include/libepc-1.0/libepc/service-type.h
/usr/include/libepc-1.0/libepc/service-monitor.h
/usr/include/libepc-1.0/libepc/service-info.h
/usr/include/libepc-1.0/libepc/publisher.h
/usr/include/libepc-1.0/libepc/protocol.h
/usr/include/libepc-1.0/libepc/marshal.h
/usr/include/libepc-1.0/libepc/enums.h
/usr/include/libepc-1.0/libepc/dispatcher.h
/usr/include/libepc-1.0/libepc/contents.h
/usr/include/libepc-1.0/libepc/consumer.h