def exportValue(self, vf, value):
        m = StrStrHashMap(value)
        keysAndValues = []
        for i in m.keys():
            keysAndValues.append(i)
            keysAndValues.append(m[i])
def _to_python(self, value):
        if isinstance(value, Proxy):
            return value.get()
        else:
            return value