def fact_fqn(name, prefix)
      prefix.empty? ? name : prefix + FactName::SEPARATOR + name
    end
def fact_fqn(name, prefix)
      prefix.empty? ? name : prefix + FactName::SEPARATOR + name
    end
Fact fully qualified name contains an unambiguous name for a fact
 e.g: ansible_lo::ipv6, ansible_virbr0::active