'Check we can initialize from additional parts.'

def testInitializationEx(self):

    sample = self.GenerateSample()
    serialized = sample.SerializeToString()
    rdfvalue_sample = self.rdfvalue_class.FromSerializedString(serialized)
    self.CheckRDFValue(rdfvalue_sample, sample)
    new_rdfvalue_sample = self.rdfvalue_class(rdfvalue_sample)
    self.CheckRDFValue(new_rdfvalue_sample, rdfvalue_sample)
    self.assertEqual(int(new_rdfvalue_sample.age), int(rdfvalue_sample.age))
