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?

Qt Code: 
  1. // fsModel = QFileSystemModel
  2. MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent),  ui(new Ui::MainWindow)
  3. {
  4.     ui->setupUi(this);
  5.     const QString rootPath = "/home/rob/";
  6.  
  7.     fsModel = new QFileSystemModel(this);
  8.     fsModel->setRootPath(rootPath);
  9.     ui->treeView->setModel(fsModel);
  10.     ui->treeView->setRootIndex(fsModel->index(rootPath));
  11. }
  12.  
  13. void MainWindow::on_buttonCompress_clicked()
  14. {
  15.     QModelIndexList list = ui->treeView->selectionModel()->selectedIndexes();
  16.  
  17.     qDebug() << list.size();
  18.  
  19.     for (const QModelIndex &modelIndex: list)
  20.         qDebug() << fsModel->filePath(modelIndex);
  21.  
  22.     //	I wouldn't like to use []. I would like to get only one filepath, the one I selected.   
  23.     qDebug() << fsModel->filePath(list[0]);
  24. }
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