function isFiltered(oTable) {
		const oFilter = Element.getElementById(oTable.getFilter());
		return getInternallyFilteredProperties(oTable).length > 0 ||
			getExternallyFilteredProperties(oTable).length > 0 ||
			oFilter && oFilter.getSearch() !== "";
	}
Whether the table is filtered internally via the inbuilt filtering ({@link sap.ui.mdc.filterbar.p13n.AdaptationFilterBar}), or externally via
the associated filter ({@link sap.ui.mdc.IFilter}).

@param {sap.ui.mdc.Table} oTable Instance of the table.
@return {boolean} Whether the table is filtered (internally or externally).