, <span class='token-genericParameter'>MOutput</span>&gt;(<span class='token-externalParam'>_</span> <span class='token-internalParam'>reader1</span>: M1, <span class='token-externalParam'>_</span> <span class='token-internalParam'>reader2</span>: M2, <span class='token-externalParam'>_</span> <span class='token-internalParam'>reader3</span>: M3, <span class='token-externalParam'>_</span> <span class='token-internalParam'>reader4</span>: M4, <span class='token-externalParam'>with</span> <span class='token-i