| QGIS API Documentation
    3.20.0-Odense (decaadbb31)
    | 
#include <QComboBox>#include <QDoubleSpinBox>#include "qgsgeopdflayertreemodel.h"#include "qgslayertree.h"#include "qgsproject.h"#include "qgsvectorlayer.h"#include "qgsapplication.h"