Subchart functionality cannot be implemented in pyside6

[yumianhuli1]

import sys
import pandas as pd
import pandas_ta
from PySide6.QtWidgets import QApplication, QMainWindow, QVBoxLayout, QWidget
from lightweight_charts.widgets import QtChart
import importlib.metadata

class MainWindow(QWidget):
def init(self):
super().init()
self.setWindowTitle('Lightweight Charts Example')
self.resize(800, 600)

    layout = QVBoxLayout()
    self.setLayout(layout)

    chart = QtChart(self)
    chart.legend(visible=True)

    df = pd.read_csv('ohlcv.csv')
    df.date = pd.to_datetime(df.date, format='%Y-%m-%d')
    df = df['date open high low close volume'.split()]
    df = df.set_index('date')

    df[['macd', 'hist', 'signal']] = pandas_ta.macd(df.close, slow=14, fast=7, signal=2)
    df = df.dropna()
    chart.set(df)

    subplot = chart.create_subchart(height=0.4, width=1)
    subplot.legend(visible=True)
    hist = subplot.create_histogram(name='hist')
    hist.set(df[['hist']])

    hist.delete()  # DELETE SHOULD REMOVE LEGEND

    hist2 = subplot.create_histogram(name='hist')
    hist2.set(df[['hist']])

    chart.topbar.textbox('version', f'v{importlib.metadata.version("lightweight_charts")}')

    layout.addWidget(chart.get_webview())

if name == 'main':
app = QApplication(sys.argv)
window = MainWindow()
window.show()
sys.exit(app.exec_())