/usr/include/libinfinity-0.6/libinfinity/communication/ is in libinfinity-0.6-dev 0.6.7-1build1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/libinfinity-0.6/libinfinity/communication/inf-communication-central-factory.h
/usr/include/libinfinity-0.6/libinfinity/communication/inf-communication-central-method.h
/usr/include/libinfinity-0.6/libinfinity/communication/inf-communication-factory.h
/usr/include/libinfinity-0.6/libinfinity/communication/inf-communication-group.h
/usr/include/libinfinity-0.6/libinfinity/communication/inf-communication-hosted-group.h
/usr/include/libinfinity-0.6/libinfinity/communication/inf-communication-joined-group.h
/usr/include/libinfinity-0.6/libinfinity/communication/inf-communication-manager.h
/usr/include/libinfinity-0.6/libinfinity/communication/inf-communication-method.h
/usr/include/libinfinity-0.6/libinfinity/communication/inf-communication-object.h
/usr/include/libinfinity-0.6/libinfinity/communication/inf-communication-registry.h