Cannot resolve method 'toClass()'

package com.company;
import javassist.ClassPool;
public class Main
{
    static ClassPool classPool = ClassPool.getDefault();
    public static void main(String[] args) throws Exception
    {
        for (int i = 0; i < 10; i++)
        {
            Class clas = classPool.makeClass(i + " outofmemory.OutOfMemoryErrorMetaspace ").toClass();//почему-хз, не гневтесь Blesspng
            System.out.println(clas.getName());
        }
    }
}

import javassist.ClassPool;
 
public class OutOfMemoryErrorMetaspace {
 
    //ClassPool objects hold all the CtClasses.
    static ClassPool classPool = ClassPool.getDefault();
 
    public static void main(String[] args) throws Exception {
           for (int i = 0; i < 1000000; i++) {
                  //makeClass method - Creates a new class (or interface) from the given class file.
                  Class clas = classPool.makeClass(
                               i + " outofmemory.OutOfMemoryErrorMetaspace ").toClass();
                  //Print name of class loaded
                  System.out.println(clas.getName());
           }
    }
}