@Override
	public Authenticator getAuthenticator() {
		return authenticator;
	}
Simple authentication handler using a default authenticator which may be passed to
{@link Authenticator#setDefault(Authenticator)}.  The preferred username must be set by 
invoking {@link #installHeadlessClientAuthenticator(String, String, boolean)} or
stipulated by the requesting URL.  The {@link ClientUtil#getUserName()} identity is never 
used.
Ghidra/Framework/FileSystem/src/main/java/ghidra/framework/client/HeadlessClientAuthenticator.java