japod@6: package org.apidesign.apifest08.currency;
japod@6: 
japod@21: public final class Assert {
japod@6: 	static void notNull(Object value, String argumentName) {
japod@6: 		if(value == null) {
japod@6: 			throw new IllegalArgumentException("The argument '" + argumentName + "' connot not be null");
japod@6: 		}
japod@6: 	}
japod@6: }
japod@21: 
japod@21: