private Number getNumber() {
			BigInteger currentValue = intTextField.getValue();
			if (currentValue == null) {
				return null;
			}
			return currentValue.longValue();
		}
Apply changes to settings.  This method must be ov
@throws CancelledException thrown if apply operation cancelled
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/data/AbstractSettingsDialog.java