def to_cf(serializer = :json)
      resources = static_resources.merge(enumerable_resources)

      case serializer
      when :json then JSON.pretty_generate(resources)
      when :yaml then YAML.dump(resources)
      end
    end
def to_cf(serializer = :json)
      resources = static_resources.merge(enumerable_resources)

      case serializer
      when :json then JSON.pretty_generate(resources)
      when :yaml then YAML.dump(resources)
      end
    end
A string representation of the stack that's valid for CFN