code: def post(self, value, addend, unit):
          
          value = value or dt.datetime.utcnow()
          if unit == "minutes":
              delta = dt.timedelta(minutes=addend)
          else:
              delta = dt.timedelta(days=addend)
          result = value + delta
          return {"result": result.isoformat()}
docs: A date adder endpoint.