Could not find android.jar for API level 29. This means the Android SDK platform for API level 29 is not installed. Either install it in the Android SDK Manager (Tools > Android > Android SDK Manager...), or change the Xamarin.Android project to target an API version that is installed. (C:\Program Files (x86)\Android\android-sdk\platforms\android-29\android.jar missing.)

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Complete the task associated to this 'TODO' comment. (https://rules.sonarsource.com/csharp/RSPEC-1135)

Remove this commented out code. (https://rules.sonarsource.com/csharp/RSPEC-125)

Rename this enumeration to match the regular expression: '^([A-Z]{1,3}[a-z0-9]+)*([A-Z]{2})?s$'. (https://rules.sonarsource.com/csharp/RSPEC-2342)

Remove the unused private field 'Release'. (https://rules.sonarsource.com/csharp/RSPEC-1144)

Remove the unused private field 'FFI_Invalidate'. (https://rules.sonarsource.com/csharp/RSPEC-1144)

Remove the unused private field 'FFI_OutputSelectedRect'. (https://rules.sonarsource.com/csharp/RSPEC-1144)

Remove the unused private field 'FFI_SetCursor'. (https://rules.sonarsource.com/csharp/RSPEC-1144)

Remove the unused private field 'FFI_SetTimer'. (https://rules.sonarsource.com/csharp/RSPEC-1144)

Remove the unused private field 'FFI_KillTimer'. (https://rules.sonarsource.com/csharp/RSPEC-1144)