replace the optimization method of lavaan

[asas asas]

Dear lavaan users,

I want to just replace the optimization method of the lavaan program.

Currently the method is nlminb or other options.I just want to try with other optimization methods.The objective function, and gradient will be fed to the optimizer.

Is there any suggestions how I can implement this?Can I consider using semTools after building my own optimization method,so that the lavaan can  call my own optimization method function?

Best,

Yilujn