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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _configure(self, **kwargs):
 """Configure authentication endpoint. Optional kwargs may include: - cloud_environment (msrestazure.azure_cloud.Cloud):
 A targeted cloud environment - china (bool):
 Configure auth for China-based service, default is 'False'. - tenant (str):
 Alternative tenant, default is 'common'. - resource (str):
 Alternative authentication resource, default is 'https://management.core.windows.net/'. - verify (bool):
 Verify secure connection, default is 'True'. - timeout (int):
 Timeout of the request in seconds. - proxies (dict):
 Dictionary mapping protocol or protocol and hostname to the URL of the proxy. - cache (adal.TokenCache):
 A adal.TokenCache, see ADAL configuration for details. This parameter is not used here and directly passed to ADAL. """

        if kwargs.get('china'):
            err_msg = ("china parameter is deprecated, "
                       "please use "
                       "cloud_environment=msrestazure.azure_cloud.AZURE_CHINA_CLOUD")
            warnings.warn(err_msg, DeprecationWarning)
            self._cloud_environment = AZURE_CHINA_CLOUD
        else:
            self._cloud_environment = AZURE_PUBLIC_CLOUD
        self._cloud_environment = kwargs.get('cloud_environment', self._cloud_environment)

        auth_endpoint = self._cloud_environment.endpoints.active_directory
        resource = self._cloud_environment.endpoints.active_directory_resource_id

        self._tenant = kwargs.get('tenant', "common")
        self._verify = kwargs.get('verify')  # 'None' will honor ADAL_PYTHON_SSL_NO_VERIFY
        self.resource = kwargs.get('resource', resource)
        self._proxies = kwargs.get('proxies')
        self._timeout = kwargs.get('timeout')
        self._cache = kwargs.get('cache')
        self.store_key = "{}_{}".format(
            auth_endpoint.strip('/'), self.store_key)
        self.secret = None
        self._context = None