code: def from_argparse(cls, opts):
          
          return cls(opts.ethinca_pn_order, opts.filter_cutoff,
              opts.ethinca_frequency_step, fLow=None,
              full_ethinca=opts.calculate_ethinca_metric,
              time_ethinca=opts.calculate_time_metric_components)
docs: Initialize an instance of the ethincaParameters class from an
          argparse.OptionParser instance. This assumes that
          insert_ethinca_metric_options
          and
          verify_ethinca_metric_options
          have already been called before initializing the class.