    # File lib/fog/bin/openstack.rb, line 15
        def [](service)
          @@connections ||= Hash.new do |hash, key|
            hash[key] = case key
            when :compute
              Fog::Logger.warning("OpenStack[:compute] is not recommended, use Compute[:openstack] for portability")
              Fog::Compute.new(:provider => 'OpenStack')
            when :identity
              Fog::Logger.warning("OpenStack[:identity] is not recommended, use Compute[:openstack] for portability")
              Fog::Compute.new(:provider => 'OpenStack')
            else
              raise ArgumentError, "Unrecognized service: #{key.inspect}"
            end
          end
          @@connections[service]
        end