proper field's role handling: may be 'subject' / 'object' *in case
of entity's relation*, but None in other case. So you should correctly
specify it to field_by_name
#! /bin/sh -e#if [ "$1" = configure ]; then if which install-docs >/dev/null 2>&1; then install-docs -i /usr/share/doc-base/cubicweb-doc fifi#DEBHELPER#exit 0