Expected Behavior
Password grant type is supported

Current Behavior
I see that the password grant type is not supported and throws an error when we make a request with password grant type. I saw there are only two converters. one for authorization code and one for client credentials.

Context
It's not something that is blocking me. Its just that when I worked with spring-security-oauth2 library it worked. But it's not present in this library.

Question
So is it somewhere on the road map to be implemented or waiting for contribution. Or is it not be supported by this library?