<p><a href="https://github.com/zoq" class="user-mention">@zoq</a>, unfortunately, I worked on the same code, but I have added the tests as well here <a href="https://github.com/mlpack/mlpack/pull/560" class="issue-link js-issue-link" data-url="https://github.com/mlpack/mlpack/issues/560" data-id="140056004" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#560</a> </p>

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