} else if (spToken instanceof final NegTokenTarg targ) {
            if (this.firstResponse) {
                if (!this.mechContext.isSupported(targ.getMechanism())) {
                    throw new SmbException("Server chose an unsupported mechanism " + targ.getMechanism());
                }
                this.selectedMech = targ.getMechanism();
                if (targ.getResult() == NegTokenTarg.REQUEST_MIC) {

        GSSName src = mock(GSSName.class);
        GSSName targ = mock(GSSName.class);
        when(src.export()).thenReturn(buildExportName(new Oid("1.2.3"), "client"));
        when(targ.export()).thenReturn(buildExportName(new Oid("1.2.3"), "service"));
        when(gssContext.getSrcName()).thenReturn(src);
        when(gssContext.getTargName()).thenReturn(targ);
        when(gssContext.getMech()).thenReturn(new Oid("1.2.3"));

    public String toString() {
        if (this.gssContext == null || !this.gssContext.isEstablished()) {
            return String.format("KERB5[src=%s,targ=%s]", this.clientName, this.serviceName);
        }
        try {
            return String.format("KERB5[src=%s,targ=%s,mech=%s]", this.gssContext.getSrcName(), this.gssContext.getTargName(),
                    this.gssContext.getMech());
        } catch (GSSException e) {