struct att_incl_desc

/*---------------- DECLARATIONS -----------------*/
/// Primary service Declaration
ATT_DECL_PRIMARY_SERVICE = 0x2800,
/// Secondary service Declaration
ATT_DECL_SECONDARY_SERVICE,
/// Include Declaration
ATT_DECL_INCLUDE,
/// Characteristic Declaration
ATT_DECL_CHARACTERISTIC,

if you see file "att.h", you can find this contents

I want to use ATT_DECL_INCLUDE

i try declare include service attribute.