d 
</h1></div>

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    <ol class="annotation-list">
        <li>@<a href="https://api.flutter.dev/flutter/dart-core/Deprecated-class.html">Deprecated</a>(&#39;This function is not useful&#39;)</li>
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<span class="returntype"><a href="https://api.flutter.dev/flutter/dart-core/Future-class.html">Future</a><span class="signature">&lt;<wbr><span class="type-parameter"><a href="https://api.flutter.dev/flutter/dart-core/Map-class.html">Map</a