src/main/java/com/zandero/utils/Assert.java
public static <T> void isNullOrEmpty(List<T> list, String message) {

		isTrue(list == null || list.size() == 0, message);
	}
public static <T> void isNullOrEmpty(List<T> list, String message) {

		isTrue(list == null || list.size() == 0, message);
	}
Tests if list is null or empty

@param list    must be null or empty
@param message to return in exception
@param <T>     object type
@throws IllegalArgumentException if list != null or list.size() greater than 0