> <span class="ident">nb</span>::<span class="prelude-ty">Result</span><span class="op">&lt;</span>(), <span class="ident">Error</span><span class="op">&gt;</span> {
        <span class="comment">// Similar to the `read` implementation</span>
    }

    <span class="kw">fn</span> <span class="ident">flush</span>(<span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">nb</span>::<span class="prelude