This enables the user to work with custom argparse commandline parser. If
the flags will not be set from external, the internal parser of the oauth
client library will be used which can not recognize the function from the
parser used by the outside user script.
This enables the user to work with custom argparse commandline parser. If the flags will not be set from external, the internal parser of the oauth client library will be used which can not recognize the function from the parser used by the outside user script.