# Source code for azure.mgmt.billing.models.download_url

    # coding=utf-8
    # --------------------------------------------------------------------------
    # Copyright (c) Microsoft Corporation. All rights reserved.
    # 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 msrest.serialization import Model

    class DownloadUrl(Model):
        """A secure URL that can be used to download a PDF invoice until the URL
        expires.

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

        :ivar expiry_time: The time in UTC at which this download URL will expire.
        :vartype expiry_time: datetime
        :ivar url: The URL to the PDF file.
        :vartype url: str
        """

        _validation = {
            'expiry_time': {'readonly': True},
            'url': {'readonly': True},
        }

        _attribute_map = {
            'expiry_time': {'key': 'expiryTime', 'type': 'iso-8601'},
            'url': {'key': 'url', 'type': 'str'},
        }

        def __init__(self):
            super(DownloadUrl, self).__init__()
            self.expiry_time = None
            self.url = None