 class="symbol monospace">abstract fun <a href="write-to-file.html">writeToFile</a>(directoryName: <a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html">String</a>, fileName: <a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html">String</a>, serializable: <a href="https://docs.oracle.com/javase/8/docs/api/java/io/Serializable.html">Serializable</a>): <a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html">String</a>?<span class="t