public void TestIfBooleanNonReference()
        {
            var structure = SchemaTestUtil.Parse(@"
using schema;
namespace foo.bar {
  [BinarySchema]
  public partial class BooleanWrapper : IBiSerializable {
    [IfBoolean(SchemaIntegerType.BYTE)]
    public int field;
  }
}");

            SchemaTestUtil.AssertDiagnostics(structure.Diagnostics,
                                             Rules.IfBooleanNeedsNullable);
        }