    # File lib/fog/ecloud/requests/compute/node_service_create.rb, line 5
            def validate_node_service_data(service_data)
              required_opts = [:name, :port, :enabled, :ip_address]
              unless required_opts.all? { |opt| service_data.has_key?(opt) }
                raise ArgumentError.new("Required Internet Service data missing: #{(required_opts - service_data.keys).map(&:inspect).join(", ")}")
              end
            end