code: def physicaliam(self, aoi):
          
          kwargs = _build_kwargs(['K', 'L', 'n'], self.module_parameters)
  
          return physicaliam(aoi, **kwargs)
docs: Determine the incidence angle modifier using ``aoi``,
          ``self.module_parameters['K']``,
          ``self.module_parameters['L']``,
          ``self.module_parameters['n']``,
          and the
          :py:func:`physicaliam` function.
  
          Uses default arguments if keys not in module_parameters.
  
          Parameters
          ----------
          aoi : numeric
              The angle of incidence in degrees.
  
          Returns
          -------
          modifier : numeric
              The AOI modifier.