function isKeyCombination(oEvent, sKeyCode, bShift, bCtrl) {
		return oEvent.keyCode == sKeyCode && oEvent.shiftKey == bShift && (oEvent.ctrlKey == bCtrl || oEvent.metaKey == bCtrl);
	}
Checks whether the key press event is a key combination.

@param {sap.ui.base.Event} oEvent The keyboard event
@param {string} sKeyCode Key code
@param {boolean} bShift Shift key pressed
@param {boolean} bCtrl Control key pressed
@returns {boolean} Whether the key press event is a key combination
@private