'Substitute parameter values into self.redirect_url_params'

def build_redirect_url_params(self, param_dict):

    if (not self.redirect_url_params):
        return
    redirect_url_params = None
    redirect_url_params = fill_template(self.redirect_url_params, context=param_dict)
    redirect_url_params = redirect_url_params.replace('\n', '    ').replace('\r', '    ')
    return redirect_url_params
