https://www.commonwl.org/v1.2/CommandLineTool.html#NetworkAccess

Show an example where it's absences fails, like in https://matrix.to/#/!RQMxrGNGkeDmWHOaEs:gitter.im/$oCRbg2MbnfAsXX6IECi9okBwwEw8zDXPMKe8b76REbA