nternalParam'>map</span>: <span class='token-keyword'>@escaping</span> (M1.MiddlewareType, M2.MiddlewareType, M3.MiddlewareType, M4.MiddlewareType) -&gt; MOutput) -&gt; <a class='type-identifier-link' href='../../../documentation/swiftrex/middlewarereader/index.html'><span>MiddlewareReader</span></a>&lt;M1.Dependencies, MOutput&gt; <span class='token-keyword'>where</span> M1 : <a class='type-identifier-link' href='../../../documentation/swiftrex/middlewarereaderprotocol/index.html'><span>MiddlewareReaderPro