SMBUtil.writeInt2(20, buffer, bufferIndex + 2);
        // Set buffer length (minimal SecurityDescriptor)
        SMBUtil.writeInt4(20, buffer, bufferIndex + 4);

        response = spy(response);
        when(response.getHeaderStart()).thenReturn(0);

        // Write minimal SecurityDescriptor header (20 bytes)
        buffer[20] = 1; // Revision
        buffer[21] = 0; // Sbz1

import jcifs.dcerpc.DcerpcHandle;
import jcifs.dcerpc.msrpc.MsrpcShareGetInfo;
import jcifs.internal.AllocInfo;
import jcifs.internal.SmbBasicFileInfo;
import jcifs.internal.dtyp.ACE;
import jcifs.internal.dtyp.SecurityDescriptor;
import jcifs.internal.dtyp.SecurityInfo;
import jcifs.internal.fscc.BasicFileInformation;
import jcifs.internal.fscc.FileBasicInfo;
import jcifs.internal.fscc.FileInformation;

        send(request, response);

        close(f, 0L);

        response.securityDescriptor.owner_user.resolve(getServerWithDfs(), auth);
        return response.securityDescriptor.owner_user;
    }

    /**
     * Returns the owner group SID for this file
     *
     * @return the owner group SID