ffi_native_invalid_duplicate_default_asset

There may be at most one @DefaultAsset annotation on a library.

The analyzer produces this diagnostic when a library directive has more than one DefaultAsset annotation associated with it.

The following code produces this diagnostic because the library directive has two DefaultAsset annotations associated with it:

@DefaultAsset('a')
@DefaultAsset('b')
library;
​
import 'dart:ffi';

Remove all but one of the DefaultAsset annotations:

@DefaultAsset('a')
library;
​
import 'dart:ffi';