I need to estimate an instrumental variable model with GLS random-effects (RE) model: xtivreg, re

The problem: this command does not provide the Kleibergen-Paap and Hansen J statistics that xtivreg2 provides.

PS: xtivreg2 does not estimate RE models.

Therefore, is there some way to obtain these statistics?

What are the postestimation options to derive useful evaluation statistics for xtivreg?

Thank you