How to use the oauth2client.util.positional function in oauth2client

    @util.positional(1)
    def _to_json(self, strip=None):
        """Utility function for creating a JSON representation of a MediaUpload.

        Args:
          strip: array, An array of names of members to not include in the JSON.

        Returns:
           string, a JSON representation of this instance, suitable to pass to
           from_json().
        """
        t = type(self)
        d = copy.copy(self.__dict__)
        if strip is not None:
            for member in strip:
                del d[member]
        d['_class'] = t.__name__

@util.positional(2)
def get_credential_storage_custom_string_key(filename, key_string,
                                             warn_on_readonly=True):
    """Get a Storage instance for a credential using a single string as a key.

    Allows you to provide a string as a custom key that will be used for
    credential storage and retrieval.

    Args:
        filename: The JSON file storing a set of credentials
        key_string: A string to use as the key for storing this credential.
        warn_on_readonly: if True, log a warning if the store is readonly

    Returns:
        An object derived from client.Storage for getting/setting the
        credential.
    """

  @util.positional(4)
  def __init__(self, model, key_name, property_name, cache=None, user=None):
    """Constructor for Storage.

    Args:
      model: db.Model or ndb.Model, model class
      key_name: string, key name for the entity that has the credentials
      property_name: string, name of the property that is a CredentialsProperty
        or CredentialsNDBProperty.
      cache: memcache, a write-through cache to put in front of the datastore.
        If the model you are using is an NDB model, using a cache will be
        redundant since the model uses an instance cache and memcache for you.
      user: users.User object, optional. Can be used to grab user ID as a
        key_name if no key name is specified.
    """
    if key_name is None:
      if user is None:

  @util.positional(2)
  def __init__(self, filename, mimetype=None, chunksize=DEFAULT_CHUNK_SIZE,
               resumable=False):
    """Constructor.

    Args:
      filename: string, Name of the file.
      mimetype: string, Mime-type of the file. If None then a mime-type will be
        guessed from the file extension.
      chunksize: int, File will be uploaded in chunks of this many bytes. Only
        used if resumable=True. Pass in a value of -1 if the file is to be
        uploaded in a single chunk. Note that Google App Engine has a 5MB limit
        on request size, so you should never set your chunksize larger than 5MB,
        or to -1.
      resumable: bool, True if this is a resumable upload. False means upload
        in a single request.
    """

@util.positional(3)
def credentials_from_clientsecrets_and_code(filename, scope, code,
                                            message = None,
                                            redirect_uri='postmessage',
                                            http=None,
                                            cache=None,
                                            device_uri=None):
  """Returns OAuth2Credentials from a clientsecrets file and an auth code.

  Will create the right kind of Flow based on the contents of the clientsecrets
  file or will raise InvalidClientSecretsError for unknown types of Flows.

  Args:
    filename: string, File name of clientsecrets.
    scope: string or iterable of strings, scope(s) to request.
    code: string, An authorization code, most likely passed down from
      the client

  @util.positional(8)
  def __init__(self, access_token, client_id, client_secret, refresh_token,
               token_expiry, token_uri, user_agent, revoke_uri=None,
               id_token=None, token_response=None):
    """Create an instance of OAuth2Credentials.

    This constructor is not usually called by the user, instead
    OAuth2Credentials objects are instantiated by the OAuth2WebServerFlow.

    Args:
      access_token: string, access token.
      client_id: string, client identifier.
      client_secret: string, client secret.
      refresh_token: string, refresh token.
      token_expiry: datetime, when the access_token expires.
      token_uri: string, URI of token endpoint.
      user_agent: string, The HTTP User-Agent to provide for this application.

  @util.positional(4)
  def __init__(self, http, postproc, uri,
               method='GET',
               body=None,
               headers=None,
               methodId=None,
               resumable=None):
    """Constructor for an HttpRequest.

    Args:
      http: httplib2.Http, the transport object to use to make a request
      postproc: callable, called on the HTTP response and content to transform
                it into a data object before returning, or raising an exception
                on an error.
      uri: string, the absolute URI to send the request to
      method: string, the HTTP method to use
      body: string, the request body of the HTTP request,

@util.positional(2)
def new_webhook_channel(url, token=None, expiration=None, params=None):
    """Create a new webhook Channel.

    Args:
      url: str, URL to post notifications to.
      token: str, An arbitrary string associated with the channel that
        is delivered to the target address with each notification delivered
        over this channel.
      expiration: datetime.datetime, A time in the future when the channel
        should expire. Can also be None if the subscription should use the
        default expiration. Note that different services may have different
        limits on how long a subscription lasts. Check the response from the
        watch() method to see the value the service has set for an expiration
        time.
      params: dict, Extra parameters to pass on channel creation. Currently
        not used for webhook channels.

@util.positional(2)
def flow_from_clientsecrets(filename, scope, redirect_uri=None,
                            message=None, cache=None, login_hint=None,
                            device_uri=None):
    """Create a Flow from a clientsecrets file.

    Will create the right kind of Flow based on the contents of the
    clientsecrets file or will raise InvalidClientSecretsError for unknown
    types of Flows.

    Args:
        filename: string, File name of client secrets.
        scope: string or iterable of strings, scope(s) to request.
        redirect_uri: string, Either the string 'urn:ietf:wg:oauth:2.0:oob' for
                      a non-web-based application, or a URI that handles the
                      callback from the authorization server.
        message: string, A friendly string to display to the user if the

@positional(2)
def build(serviceName,
          version,
          http=None,
          discoveryServiceUrl=DISCOVERY_URI,
          developerKey=None,
          model=None,
          requestBuilder=HttpRequest):
  """Construct a Resource for interacting with an API.

  Construct a Resource object for interacting with an API. The serviceName and
  version are the names from the Discovery service.

  Args:
    serviceName: string, name of the service.
    version: string, the version of the service.
    http: httplib2.Http, An instance of httplib2.Http or something that acts