How to use the stix2.properties.Property function in stix2

else:
                        dictified[key] = cls(**subvalue)
                elif type(subvalue) is cls:
                    # If already an instance of an _Extension class, assume it's valid
                    dictified[key] = subvalue
                else:
                    raise ValueError("Cannot determine extension type.")
            else:
                if self.allow_custom:
                    dictified[key] = subvalue
                else:
                    raise CustomContentError("Can't parse unknown extension type: {}".format(key))
        return dictified


class STIXObjectProperty(Property):

    def __init__(self, spec_version=stix2.DEFAULT_VERSION, allow_custom=False, *args, **kwargs):
        self.allow_custom = allow_custom
        self.spec_version = spec_version
        super(STIXObjectProperty, self).__init__(*args, **kwargs)

    def clean(self, value):
        # Any STIX Object (SDO, SRO, or Marking Definition) can be added to
        # a bundle with no further checks.
        if any(x in ('STIXDomainObject', 'STIXRelationshipObject', 'MarkingDefinition')
               for x in get_class_hierarchy_names(value)):
            # A simple "is this a spec version 2.1+ object" test.  For now,
            # limit 2.0 bundles to 2.0 objects.  It's not possible yet to
            # have validation co-constraints among properties, e.g. have
            # validation here depend on the value of another property
            # (spec_version).  So this is a hack, and not technically spec-

value = float(value)
        except Exception:
            raise ValueError("must be a float.")

        if self.min is not None and value < self.min:
            msg = "minimum value is {}. received {}".format(self.min, value)
            raise ValueError(msg)

        if self.max is not None and value > self.max:
            msg = "maximum value is {}. received {}".format(self.max, value)
            raise ValueError(msg)

        return value


class BooleanProperty(Property):

    def clean(self, value):
        if isinstance(value, bool):
            return value

        trues = ['true', 't', '1']
        falses = ['false', 'f', '0']
        try:
            if value.lower() in trues:
                return True
            if value.lower() in falses:
                return False
        except AttributeError:
            if value == 1:
                return True
            if value == 0:

"""STIX 2 Bundle object"""

from .base import _STIXBase
from .properties import IDProperty, Property, TypeProperty


class Bundle(_STIXBase):

    _type = 'bundle'
    _properties = {
        'type': TypeProperty(_type),
        'id': IDProperty(_type),
        'spec_version': Property(fixed="2.0"),
        'objects': Property(),
    }

    def __init__(self, *args, **kwargs):
        # Add any positional arguments to the 'objects' kwarg.
        if args:
            if isinstance(args[0], list):
                kwargs['objects'] = args[0] + list(args[1:]) + kwargs.get('objects', [])
            else:
                kwargs['objects'] = list(args) + kwargs.get('objects', [])

        super(Bundle, self).__init__(**kwargs)

def clean(self, value):
        clean_dict = super(HashesProperty, self).clean(value)
        for k, v in clean_dict.items():
            key = k.upper().replace('-', '')
            if key in HASHES_REGEX:
                vocab_key = HASHES_REGEX[key][1]
                if not re.match(HASHES_REGEX[key][0], v):
                    raise ValueError("'{0}' is not a valid {1} hash".format(v, vocab_key))
                if k != vocab_key:
                    clean_dict[vocab_key] = clean_dict[k]
                    del clean_dict[k]
        return clean_dict


class BinaryProperty(Property):

    def clean(self, value):
        try:
            base64.b64decode(value)
        except (binascii.Error, TypeError):
            raise ValueError("must contain a base64 encoded string")
        return value


class HexProperty(Property):

    def clean(self, value):
        if not re.match(r"^([a-fA-F0-9]{2})+$", value):
            raise ValueError("must contain an even number of hexadecimal characters")
        return value

falses = ['false', 'f', '0']
        try:
            if value.lower() in trues:
                return True
            if value.lower() in falses:
                return False
        except AttributeError:
            if value == 1:
                return True
            if value == 0:
                return False

        raise ValueError("must be a boolean value.")


class TimestampProperty(Property):

    def __init__(self, precision=None, **kwargs):
        self.precision = precision
        super(TimestampProperty, self).__init__(**kwargs)

    def clean(self, value):
        return parse_into_datetime(value, self.precision)


class DictionaryProperty(Property):

    def __init__(self, spec_version=stix2.DEFAULT_VERSION, **kwargs):
        self.spec_version = spec_version
        super(DictionaryProperty, self).__init__(**kwargs)

    def clean(self, value):

def __init__(self, **kwargs):
        super(StringProperty, self).__init__(**kwargs)

    def clean(self, value):
        if not isinstance(value, string_types):
            return text_type(value)
        return value


class TypeProperty(Property):

    def __init__(self, type):
        super(TypeProperty, self).__init__(fixed=type)


class IDProperty(Property):

    def __init__(self, type, spec_version=stix2.DEFAULT_VERSION):
        self.required_prefix = type + "--"
        self.spec_version = spec_version
        super(IDProperty, self).__init__()

    def clean(self, value):
        _validate_id(value, self.spec_version, self.required_prefix)
        return value

    def default(self):
        return self.required_prefix + str(uuid.uuid4())


class IntegerProperty(Property):

value = int(value)
        except Exception:
            raise ValueError("must be an integer.")

        if self.min is not None and value < self.min:
            msg = "minimum value is {}. received {}".format(self.min, value)
            raise ValueError(msg)

        if self.max is not None and value > self.max:
            msg = "maximum value is {}. received {}".format(self.max, value)
            raise ValueError(msg)

        return value


class FloatProperty(Property):

    def __init__(self, min=None, max=None, **kwargs):
        self.min = min
        self.max = max
        super(FloatProperty, self).__init__(**kwargs)

    def clean(self, value):
        try:
            value = float(value)
        except Exception:
            raise ValueError("must be a float.")

        if self.min is not None and value < self.min:
            msg = "minimum value is {}. received {}".format(self.min, value)
            raise ValueError(msg)

self.clean = self._default_clean
            self.default = lambda: fixed
        if default:
            self.default = default

    def clean(self, value):
        return value

    def __call__(self, value=None):
        """Used by ListProperty to handle lists that have been defined with
        either a class or an instance.
        """
        return value


class ListProperty(Property):

    def __init__(self, contained, **kwargs):
        """
        ``contained`` should be a function which returns an object from the value.
        """
        if inspect.isclass(contained) and issubclass(contained, Property):
            # If it's a class and not an instance, instantiate it so that
            # clean() can be called on it, and ListProperty.clean() will
            # use __call__ when it appends the item.
            self.contained = contained()
        else:
            self.contained = contained
        super(ListProperty, self).__init__(**kwargs)

    def clean(self, value):
        try:

def __call__(self):
        return _Observable.values(self.parent_instance)


class StringProperty(Property):

    def __init__(self, **kwargs):
        super(StringProperty, self).__init__(**kwargs)

    def clean(self, value):
        if not isinstance(value, string_types):
            return text_type(value)
        return value


class TypeProperty(Property):

    def __init__(self, type):
        super(TypeProperty, self).__init__(fixed=type)


class IDProperty(Property):

    def __init__(self, type, spec_version=stix2.DEFAULT_VERSION):
        self.required_prefix = type + "--"
        self.spec_version = spec_version
        super(IDProperty, self).__init__()

    def clean(self, value):
        _validate_id(value, self.spec_version, self.required_prefix)
        return value

class IDProperty(Property):

    def __init__(self, type, spec_version=stix2.DEFAULT_VERSION):
        self.required_prefix = type + "--"
        self.spec_version = spec_version
        super(IDProperty, self).__init__()

    def clean(self, value):
        _validate_id(value, self.spec_version, self.required_prefix)
        return value

    def default(self):
        return self.required_prefix + str(uuid.uuid4())


class IntegerProperty(Property):

    def __init__(self, min=None, max=None, **kwargs):
        self.min = min
        self.max = max
        super(IntegerProperty, self).__init__(**kwargs)

    def clean(self, value):
        try:
            value = int(value)
        except Exception:
            raise ValueError("must be an integer.")

        if self.min is not None and value < self.min:
            msg = "minimum value is {}. received {}".format(self.min, value)
            raise ValueError(msg)