assertTrue(nbtAddress.isGroupAddress(mockContext));
        verify(mockNameServiceClient).getNbtAllByAddress(any(NetbiosAddress.class));
    }

    @Test
    void testIsGroupAddress_NoCheckDataCall() throws UnknownHostException {
        // Test isGroupAddress when checkData is NOT called (hostName is known)
        mockName = new Name(mockConfig, "KNOWNHOST", 0x20, null);