def __init__(self, min_value=None, max_value=None):
Field.__init__(self)
self.min_value = min_value
self.max_value = max_value
def __init__(self, min_length=None, max_length=None):
Field.__init__(self)
self.min_length = min_length
self.max_length = max_length
def __init__(self, field):
Field.__init__(self)
self.field = field
def __init__(self, cls):
Field.__init__(self)
self.cls = cls
def __init__(self, field):
Field.__init__(self)
self.field = field
def __init__(self, cls):
Field.__init__(self)
self.cls = cls