how to use the void QAbstractItemView::clearSelection()

[tomorrow]

I want to have a button which when it is clicked it clear the selection for QListWidget items
I searched and people were suggesting to use

void QAbstractItemView::clearSelection()

void QAbstractItemView::clearSelection()

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any suggestion on how to use this ?

void MainWindow::on_Button_clear_all_clicked()
{
      //
}

void MainWindow::on_Button_clear_all_clicked()
{
      //
}

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