or">: </span><a href="https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-string/index.html">String</a></span></span><span class="token punctuation">)</span><span class="token operator">: </span><a href="https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-any/index.html">Any</a><span class="token operator">?</span><span class="clearfix"><span class="floating-right">(<a href="https://github.com/jeffdgr8/kotbase/tree/main/couchbase-lite-ktx/src/commonMain/kotlin/kotbase/ktx/DocumentExtensions.kt#L87">sour