function fnVisitAllContainers(oPaneContainer) {
			oPaneContainer.getPanes().forEach(function(oPane) {
				if (oPane instanceof PaneContainer) {
					fnVisitAllContainers(oPane);
				} else if (oPane._isInInterval(iFrom)) {
					aPanes.push(oPane);
				}
			});
			return aPanes;
		}
Returns an array of all nested panes which are suitable for the current interval
@returns {array} An array of all nested panes
@private