Invalid Dart code generated for union types

[gudvinr]

Compile following two files:

ext.fbs

// ext.fbs
namespace test.ext;

table Something {
    field: string;
}

test.fbs

// test.fbs
include "ext.fbs";

namespace test;

union TestUnion {
	ext.Something,
}

table Test {
	tu: TestUnion;
}

root_type Test;

$ flatc --dart -I ./ -o ./ ext.fbs test.fbs

---

flatc will generate this:

Something here is the type from ext.fbs and dart fails on highlighted string with undefined_identifier:

Undefined name 'Something'.
Try correcting the name to one that is defined, or defining the name.