en operator">?</span><span class="token operator"> = </span>null<span class="token punctuation">)</span><span class="token operator">: </span><a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.properties/-read-write-property/index.html">ReadWriteProperty</a><span class="token operator">&lt;</span><span class="token keyword"></span><a href="https://developer.android.com/reference/kotlin/androidx/fragment/app/Fragment.html">Fragment</a><span class="token operator">?</span><span class="token punctuat