#fixed code
                             @Override
	public void lookup()
	{
		myMethods = lookupMethods();
	}
#vulnerable code 
                             @Override
	public void lookup()
	{
		ClassGroup group = this.getInstructions().getCode().getAttributes().getClassFile().getGroup();
		
		ClassFile otherClass = group.findClass(method.getClassEntry().getName());
		if (otherClass == null)
			return; // not our class
		
		// look up this method in this class and anything that inherits from it
		//List<net.runelite.deob.Method> list = new ArrayList<>();
		//findMethodFromClass(list, otherClass);
		myMethods = Renamer.getVirutalMethods(otherClass.findMethod(method.getNameAndType()));
	} 
                            #location 4 
                            #vulnerability type NULL_DEREFERENCE