public void PersistentFieldSignature()
{
var module = ModuleDefinition.FromFile(typeof(SingleField).Assembly.Location);
var field = (FieldDefinition)module.LookupMember(
typeof(SingleField).GetField(nameof(SingleField.IntField)).MetadataToken);
field.Signature = FieldSignature.CreateInstance(module.CorLibTypeFactory.Byte);
var newField = RebuildAndLookup(field);
Assert.True(newField.Signature.FieldType.IsTypeOf("System", "Byte"), "Field type should be System.Byte");
}