help to use GMerrorsar () spdep

Hi Folks,

I am trying to work with spatial logit model and I stopped my research
in a Paper of Pinkse that make estimation of spatial models by GMM.
I search in R communite and I find that GMerrorsar function in spdep
package is used to it,  but I have tryied so many times to make my
model by this function and i did not figure it out.
Some body knows how to work with this function?
If so, can send me an example?

I will be very glad for help.
Thanks in advance,
Francisco Gildemir Ferreira da Silva