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<h1>extraValue</h1>
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<code><span class="keyword">var </span><span class="identifier">extraValue</span><span class="symbol">: </span><a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html"><span class="identifier">String</span></a><span class="symbol">?</span></code>
<p>The additional String value used for the radio button group.</p>
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