def get_stdm_data_category_for_layout(layout: QgsLayout) -> Optional[str]: return layout.customProperty(LayoutUtils.DATA_CATEGORY_PROPERTY, None)
def get_stdm_referenced_table_for_layout( layout: QgsLayout) -> Optional[str]: return layout.customProperty(LayoutUtils.REFERENCED_TABLE_PROPERTY, None)
def get_stdm_data_source_for_layout(layout: QgsLayout) -> Optional[str]: return layout.customProperty(LayoutUtils.DATA_SOURCE_PROPERTY, None)