assertNotNull(result);
        assertArrayEquals(expectedMembers, result);
        verify(sidResolver, times(1)).getGroupMemberSids(mockContext, testServerName, mockDomainSid, 512, 0);
    }

    @Test
    void testGetGroupMemberSids_EmptyGroup() throws CIFSException {

        SID groupSid = new SID(rpcSid, SID.SID_TYPE_DOM_GRP, "BUILTIN", "Administrators", false);

        String server = "myserver";
        int flags = 0;
        groupSid.getGroupMemberSids(server, mockContext, flags);

        verify(mockResolver).getGroupMemberSids(mockContext, server, groupSid.getDomainSid(), groupSid.getRid(), flags);
    }

    /**
     * Test getting group members for a non-group SID.
     *

        @Test
        @DisplayName("getGroupMemberSids: non-group types return empty and do not call resolver")
        void testGetGroupMemberSidsNonGroup() throws Exception {
            byte[] ident = new byte[] { 0, 0, 0, 0, 0, 5 };
            SID user = new SID(buildSidT((byte) 1, ident, 10, 99), jcifs.SID.SID_TYPE_USER, "DOM", "alice", false);

            jcifs.SID[] res = user.getGroupMemberSids("srv", mockCtx, 0);

            } catch (final IOException e) {
                throw new CIFSException("Failed to get SID from server", e);
            }
        }
    }

    @Override
    public SID[] getGroupMemberSids(final CIFSContext tc, final String authorityServerName, final jcifs.SID domsid, final int rid,
            final int flags) throws CIFSException {
        final lsarpc.LsarSidArray sidarray = new lsarpc.LsarSidArray();

     * @param rid the group RID
     * @param flags resolution flags
     * @return the SIDs of the group members
     * @throws CIFSException if there is an error retrieving group members
     */
    SID[] getGroupMemberSids(CIFSContext tc, String authorityServerName, SID domsid, int rid, int flags) throws CIFSException;

    /**
     * Gets the domain SID for the specified server.
     *
     * @param authorityServerName the server name

     */
    public jcifs.SID[] getGroupMemberSids(final String authorityServerName, final CIFSContext tc, final int flags) throws IOException {
        if (this.type != SID_TYPE_DOM_GRP && this.type != SID_TYPE_ALIAS) {
            return new SID[0];
        }

        return tc.getSIDResolver().getGroupMemberSids(tc, authorityServerName, getDomainSid(), getRid(), flags);
    }

    /**

     * @param flags resolution flags
     * @return array of SIDs representing group members
     * @throws IOException if there is an error retrieving group members
     */
    public SID[] getGroupMemberSids(final String authorityServerName, final NtlmPasswordAuthentication auth, final int flags)
            throws IOException {
        if (type != SID_TYPE_DOM_GRP && type != SID_TYPE_ALIAS) {
            return new SID[0];