code: def get_checked_features(self):
          
          feature_types = []
          if self.roads_flag.isChecked():
              feature_types.append('roads')
          if self.buildings_flag.isChecked():
              feature_types.append('buildings')
          if self.building_points_flag.isChecked():
              feature_types.append('building-points')
          if self.flood_prone_flag.isChecked():
              feature_types.append('flood-prone')
          if self.evacuation_centers_flag.isChecked():
              feature_types.append('evacuation-centers')
          if self.boundary_flag.isChecked():
              level = self.admin_level_comboBox.currentIndex() + 1
              feature_types.append('boundary-%s' % level)
          return feature_types
docs: Create a tab with all checked features.
  
          :return A list with all features which are checked in the UI.
          :rtype list