CC2541: the include or secondary services

Hi,

You can see an example from the HIDEmuKbd project:

static gattAttribute_t hidAttrTbl[] =
{
// HID Service
{
{ ATT_BT_UUID_SIZE, primaryServiceUUID }, /* type */
GATT_PERMIT_READ, /* permissions */
0, /* handle */
(uint8 *) &hidService /* pValue */
},

// Included service (battery)
{
{ ATT_BT_UUID_SIZE, includeUUID },
GATT_PERMIT_READ,
0,
(uint8 *)&include
},

Best wishes

Hi,
I knew this,but i don't know any more details about that.it's just added the include UUID, how can i know it's the battery service?
thanks