title: Flutter report the function 'run' isn't defined
body: <p>I can run my project,but in dart Analysis there is wrong :&quot;The function &quot;run&quot; isn't defined.&quot; in integration_test</p>
  <ol>
  <li>I don't know the feature of the integration_test</li>
  <li>how I remove the wrong</li>
  </ol>
  <p>here is code in integration_test:</p>
  <p>'''void main() =&gt; run(_testMain)'''</p>