otocol/requests/StringRequests$$SetNX.html" title="Permalink"><i class="material-icons"></i></a></span> <span class="modifier_kind"><span class="modifier"></span> <span class="kind">case class</span></span> <span class="symbol"><a href="StringRequests$$SetNX.html" title=""><span class="name">SetNX</span></a><span class="tparams">[<span name="W">W</span>]</span><span class="params">(<span name="key">key: <span name="scala.Predef.String" class="extype">String</span></span>, <span name="value">value: <span 