icient `clone` calls because
we would remove them in the future. Well, that time is now!
-->
<p>その際、将来的に除去する予定なので、非効率的な<code>clone</code>呼び出しを憂慮するなと述べました。
えっと、その時は今です！</p>
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We needed `clone` here because we have a slice with `String` elements in the
parameter `args`, but the `new` function doesn’t own `args`. To return
ownership of a `Config` instance, we had to clone the values from the `query`
and