在pymoo中求解NSGA 2时，如何将支配解集保存到数据帧中？

import pandas as pd
from pymoo.algorithms.nsga2 import NSGA2
from pymoo.factory import get_problem
from pymoo.optimize import minimize

problem = get_problem("<问题名称>")
algorithm = NSGA2()

res = minimize(problem,
               algorithm,
               termination=('n_gen', 100),
               seed=1,
               save_history=True,
               verbose=True)

dominated_solutions = res.pop.get("X")

df = pd.DataFrame(dominated_solutions, columns=["Objective 1", "Objective 2", ...])