`HandleType``. Readonly.</span>
  <span class="Identifier">data</span><span class="Operator">*</span> <span class="Other pragmabegin">{.</span><div class="pragma"><span class="Identifier">importc</span><span class="Other">:</span> <span class="StringLit">&quot;data&quot;</span></div><span class="Other pragmaend">.}</span><span class="Other">:</span> <span class="Identifier">pointer</span> <span class="Comment">## Space for user-defined arbitrary data. libuv does not use this field.</span>
  <span class="Ide