public boolean allowsNameCallback() {
		return nameCallbackAllowed;
	}
Complete the authentication process
@param userMgr Ghidra server user manager
@param subject unauthenticated user ID (must be used if name callback not provided/allowed)
@param callbacks authentication callbacks
@return authenticated user ID (may come from callbacks)
@throws LoginException if authentication failure occurs
Ghidra/Features/GhidraServer/src/main/java/ghidra/server/security/SSHAuthenticationModule.java