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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 time(lancet, issue):
 """ Start an Harvest timer for the given issue. This command takes care of linking the timer with the issue tracker page for the given issue. If the issue is not passed to command it's taken from currently active branch. """

    issue = get_issue(lancet, issue)

    with taskstatus("Starting harvest timer") as ts:
        lancet.timer.start(issue)
        ts.ok("Started harvest timer")