Change layout of legend2

📊 Plotly Python
1

How to change layout of legend2 with fig.update_layout()?

import plotly.express as px
import pandas as pd
numbers = pd.DataFrame([[1,2,3,4], [2,3,4,5], [5,7,8,8]])
asdf = px.line(numbers)
asdf = asdf.add_scatter(
    x=[4,3],
    y=[1,2],
    legend="legend2"
)
asdf = asdf.update_layout(
    legend_font=dict(size=20),
    legend2_font=dict(size=20),
)
asdf