How to use the azure-cognitiveservices-search-imagesearch.azure.cognitiveservices.search.imagesearch.models.properties_item.PropertiesItem function in azure-cognitiveservices-search-imagesearch

# coding=utf-8
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# Licensed under the MIT License. See License.txt in the project root for
# license information.
#
# Code generated by Microsoft (R) AutoRest Code Generator.
# Changes may cause incorrect behavior and will be lost if the code is
# regenerated.
# --------------------------------------------------------------------------

from .properties_item import PropertiesItem


class Rating(PropertiesItem):
    """Defines a rating.

    You probably want to use the sub-classes and not this class directly. Known
    sub-classes are: AggregateRating

    Variables are only populated by the server, and will be ignored when
    sending a request.

    All required parameters must be populated in order to send to Azure.

    :ivar text: Text representation of an item.
    :vartype text: str
    :param _type: Required. Constant filled by server.
    :type _type: str
    :param rating_value: Required. The mean (average) rating. The possible
     values are 1.0 through 5.0.

def __init__(self, **kwargs):
        super(PropertiesItem, self).__init__(**kwargs)
        self.text = None
        self._type = None