docs: def get_results(self):
          """
          Gets results.
  
          Returns
          -------
          results : dictionary
          """
  
          return {'status': self.status,
                  'error_msg': self.error_msg,
                  'k': self.k,
                  'x': self.x,
                  'lam': self.lam*self.obj_sca,
                  'nu': self.nu*self.obj_sca,
                  'mu': self.mu*self.obj_sca,
                  'pi': self.pi*self.obj_sca}