docs: public ClassLoader execute(ClassLoader cl) {
  
          //PK83186 start
          newClassLoader = cl;
  
          if (threadContextAccessor.isPrivileged()) {
              cl = (ClassLoader) run();
          } else {
              cl = (ClassLoader) AccessController.doPrivileged(this);
          }
  
          newClassLoader = null;
          oldClassLoader = null;
  
          return cl;
          //PK83186 end
      }