div class="symbol monospace"><span class="token keyword">open </span><span class="token keyword">override </span><span class="token keyword">fun </span><a href="get-double.html"><span class="token function">getDouble</span></a><span class="token punctuation">(</span><span class="parameters "><span class="parameter ">key<span class="token operator">: </span><a href="https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-string/index.html">String</a></span></span><span class="token punctuation">)</span><span c