if (className.equals("Z")) { throw new IllegalStateException(); }
	public ClassDescriptor(String className) {		if (className.indexOf('.') >= 0) {			throw new IllegalArgumentException("Class name " + className + " not in VM format");		}		if (!ClassName.isValidClassName(className)) {			throw new IllegalArgumentException("Invalid class name " + className);		}		this.className = className;	}