QModelIndexList: getting 4 QModelIndex for each item selected in a QTreeView.

In the following code, why am I getting size 4 for QModelIndexList if I click in one file or directory only? How can I get only one path? I know I could use [0] but is there another way to get size 1?

Code:

// fsModel = QFileSystemModel
MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent),  ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    const QString rootPath = "/home/rob/";
 
    fsModel = new QFileSystemModel(this);
    fsModel->setRootPath(rootPath);
    ui->treeView->setModel(fsModel);
    ui->treeView->setRootIndex(fsModel->index(rootPath));
}
 
void MainWindow::on_buttonCompress_clicked()
{
    QModelIndexList list = ui->treeView->selectionModel()->selectedIndexes();
 
    qDebug() << list.size();
 
    for (const QModelIndex &modelIndex: list)
        qDebug() << fsModel->filePath(modelIndex);
 
    //	I wouldn't like to use []. I would like to get only one filepath, the one I selected.   
    qDebug() << fsModel->filePath(list[0]);
}