dditional arguments which can be retrieved with
<code><a href="https://rdrr.io/r/base/conditions.html" class="external-link">tryCatch()</a></code>.</p></dd>

</dl></div>
    <div id="value">
    <h2>Value</h2>
    

<p>returns an invisible <code>NULL</code> if the argument is valid, or
generates an error message.</p>
    </div>
    <div id="see-also">
    <h2>See also</h2>
    <div class="dont-index"><p>"Examples" section in <code><a href="check_type.html">check_type()</a></code> for how to customize
error 