引数: ブーリアン。
Since Puppet 5.0.0, you can create new values for almost any
-data type using the type system — you can use the built-in
+data type using the type system - you can use the built-in
[`String.new`](https://puppet.com/docs/puppet/latest/function.html#boolean-to-string)
function to convert to String, with many different format options: