"op">-</span><span class="op">&gt;</span> <span class="kw">impl</span> <span class="ident">Generator</span><span class="op">&lt;</span><span class="ident">Return</span> <span class="op">=</span> <span class="prelude-ty">Result</span><span class="op">&lt;</span>(<span class="ident">S</span>, [<span class="ident">u8</span>; <span class="number">16</span>]), <span class="ident">S</span>::<span class="ident">Error</span><span class="op">&gt;</span>, <span class="ident">Yield</span> <span class="op">=</span> ()<