ss="identifier">v3</span><span>] </span><span class="keyword">def</span><span> </span><span class="declaration-name">checkClient</span><span>(</span><span class="identifier">in</span><span>: </span><span class="type-name">In</span><span>)(</span><span class="identifier">using</span><span> </span><span class="identifier">engineContext</span><span>: </span><span class="type-name">EngineRunContext</span><span>): </span><span class="type-name">IO</span><span>[</span><span class="type-name">CustomError</span><sp