oes not add useful information.</li>
</ul>
<p><code>ifNull</code>, <code>ifEmpty</code>, <code>unit</code>, and <code>tooltip</code> make property
descriptions clearer. The examples in the code sample below illustrate
good uses of all of these parameters.</p>
<h2 id="diagnosticsproperty-subclasses-for-primitive-types">DiagnosticsProperty subclasses for primitive types</h2>
<ul>
<li><code>StringProperty</code>, which supports automatically enclosing a <a href="https://api.flutter.dev/flutter/dart-core/String