Future<List<Object>> function() {} doesn't show code suggestions for Flutter (Android Studio & Vscode)

[babakoto]

I have already tested:

• File/Invalidate cache
• remove ~/.dartServer/.analysis-driver/

[√] Flutter (Channel stable, 1.20.1, on Microsoft Windows [Version 10.0.19041.388], locale en-US)
• Flutter version 1.20.1 at C:\Users\babakoto\Downloads\flutter_windows_1.20.1-stable\flutter
• Framework revision 2ae34518b8 (4 days ago), 2020-08-05 19:53:19 -0700
• Engine revision c8e3b94853
• Dart version 2.9.0

[!] Android toolchain - develop for Android devices (Android SDK version 29.0.3)
• Android SDK at C:\Users\babakoto\AppData\Local\Android\sdk
• Platform android-29, build-tools 29.0.3
• Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
• Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b01)
! Some Android licenses not accepted. To resolve this, run: flutter doctor --android-licenses

[√] Android Studio (version 4.0)
• Android Studio at C:\Program Files\Android\Android Studio
• Flutter plugin version 48.0.2
• Dart plugin version 193.7361
• Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b01)

[√] VS Code (version 1.47.3)
• VS Code at C:\Users\babakoto\AppData\Local\Programs\Microsoft VS Code
• Flutter extension version 3.13.2

[√] Connected device (1 available)
• MAR LX1A (mobile) • L2N0220319011997 • android-arm64 • Android 10 (API 29)

! Doctor found issues in 1 category.
Process finished with exit code 0

[monkeyswarm]

Flutter language/framework issues are tracked at the Flutter repository: https://github.com/flutter/flutter