NetworkService
Creates a new #GNetworkService representing the given @service,
Return
a new #GNetworkService
Since
2.22
Parameters
service
the service type to look up (eg, "ldap")
protocol
the networking protocol to use for @service (eg, "tcp")
domain
the DNS domain to look up the service in
constructor(pointer: <Error class: unknown class><<Error class: unknown class>>)