public FieldNode field(MemberRef ref) {
		
		for (ClassNode c : classes()) {
			if (ref.declaringClass().equals(Type.getType("L" + c.name() + ";"))) {
				for (FieldNode f : c.fields()) {
					if (ref.nameAndType().equals(f.editor.nameAndType())) {
						return f;
					}
				}
			}
		}
		return null;
	}