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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 AddTimeZoneOption(self, argument_group):
 """Adds the time zone option to the argument group. Args: argument_group (argparse._ArgumentGroup):
 argparse argument group. """

    # Note the default here is None so we can determine if the time zone
    # option was set.
    argument_group.add_argument(
        '-z', '--zone', '--timezone', dest='timezone', action='store',
        type=str, default=None, help=(
            'explicitly define the timezone. Typically the timezone is '
            'determined automatically where possible otherwise it will '
            'default to UTC. Use "-z list" to see a list of available '
            'timezones.'))