</span><span class="token keyword">override </span><span class="token keyword">fun </span><a href="index.html#1886950984%2FFunctions%2F2069758617"><span class="token function">nonNullValueToString</span></a><span class="token punctuation">(</span><span class="parameters "><span class="parameter ">value<span class="token operator">: </span><a href="https://docs.oracle.com/javase/8/docs/api/java/time/Duration.html">Duration</a></span></span><span class="token punctuation">)</span><span class="token operator">