title: Error: The getter 'addressOf' isn't defined for the class 'Utf8'
body: <p><img src="https://i.stack.imgur.com/O6EUB.png" alt="Screenshot of the requirements file" /></p>
  <blockquote>
  <p>/C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/ffi-0.1.3/lib/src/utf8.dart:63:33:
  Error: The getter 'addressOf' isn't defined for the class 'Utf8'.</p>
  </blockquote>
  <blockquote>
  <p>'Utf8' is from 'package:ffi/src/utf8.dart'
  ('/C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/ffi-0.1.3/lib/src/utf8.dart').
  Try correcting the name to the name of an existing getter, or defining
  a getter or field named 'addressOf'.   String toString() =&gt;
  fromUtf8(addressOf);
  ^^^^^^^^^ /C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_svg-0.18.1/lib/src/picture_provider.dart:50:59:
  Error: No named parameter with the name 'nullOk'.
  context != null ? Localizations.localeOf(context, nullOk: true) : null,
  ^^^^^^ /C:/src/flutter/packages/flutter/lib/src/widgets/localizations.dart:413:17:
  Context: Found this candidate, but the arguments don't match.   static
  Locale localeOf(BuildContext context) {
  ^^^^^^^^ /C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/path_provider_windows-0.0.4+3/lib/src/path_provider_windows_real.dart:126:25:
  Error: The getter 'addressOf' isn't defined for the class 'GUID'.</p>
  </blockquote>
  <blockquote>
  <p>'GUID' is from 'package:win32/src/structs.dart'
  ('/C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart').
  Try correcting the name to the name of an existing getter, or defining
  a getter or field named 'addressOf'.
  knownFolderID.addressOf, KF_FLAG_DEFAULT, NULL, pathPtrPtr);
  ^^^^^^^^^ /C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart:1067:7:
  Error: The getter 'addressOf' isn't defined for the class 'LOGFONT'.</p>
  </blockquote>
  <blockquote>
  <p>'LOGFONT' is from 'package:win32/src/structs.dart'
  ('/C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart').
  Try correcting the name to the name of an existing getter, or defining
  a getter or field named 'addressOf'.
  addressOf.cast().elementAt(28).cast();
  ^^^^^^^^^ /C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart:1112:29:
  Error: The getter 'addressOf' isn't defined for the class
  'ENUMLOGFONTEX'.</p>
  </blockquote>
  <blockquote>
  <p>'ENUMLOGFONTEX' is from 'package:win32/src/structs.dart' ('/C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart').
  Try correcting the name to the name of an existing getter, or defining
  a getter or field named 'addressOf'.   LOGFONT get elfLogFont =&gt;
  addressOf.cast().ref;
  ^^^^^^^^^ /C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart:1114:29:
  Error: The getter 'addressOf' isn't defined for the class
  'ENUMLOGFONTEX'.</p>
  </blockquote>
  <blockquote>
  <p>'ENUMLOGFONTEX' is from 'package:win32/src/structs.dart' ('/C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart').
  Try correcting the name to the name of an existing getter, or defining
  a getter or field named 'addressOf'.   String get elfFullName =&gt;
  addressOf
  ^^^^^^^^^</p>
  <p>FAILURE: Build failed with an exception.</p>
  <ul>
  <li><p>Where: Script 'C:\src\flutter\packages\flutter_tools\gradle\flutter.gradle' line:
  1035</p>
  </li>
  <li><p>What went wrong: Execution failed for task ':app:compileFlutterBuildDebug'.
  Process 'command 'C:\src\flutter\bin\flutter.bat'' finished with non-zero exit value 1</p>
  </li>
  <li><p>Try: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.</p>
  </li>
  <li><p>Get more help at <a href="https://help.gradle.org" rel="noreferrer">https://help.gradle.org</a></p>
  </li>
  </ul>
  <p>BUILD FAILED in 1m 6s Exception: Gradle task assembleDebug failed with
  exit code 1</p>
  </blockquote>