GetExtensionLicenseData.
        [Preview API]
        :param str extension_id:
        :rtype: :class:`<ExtensionLicenseData> <azure.devops.v5_0.licensing.models.ExtensionLicenseData>`

def get_extension_license_data(self, extension_id):
        """GetExtensionLicenseData.
        [Preview API]
        :param str extension_id:
        :rtype: :class:`<ExtensionLicenseData> <azure.devops.v5_0.licensing.models.ExtensionLicenseData>`
        """
        route_values = {}
        if extension_id is not None:
            route_values['extensionId'] = self._serialize.url('extension_id', extension_id, 'str')
        response = self._send(http_method='GET',
                              location_id='004a420a-7bef-4b7f-8a50-22975d2067cc',
                              version='5.0-preview.1',
                              route_values=route_values)
        return self._deserialize('ExtensionLicenseData', response)