16         .metadata = {.tag_metadata = {.value = value, .tagged_item = NULL}},
 struct cbor_item_t cbor_item_t
The item handle. 
union cbor_item_metadata metadata
Discriminated by type. 
size_t refcount
Reference count - initialize to 0. 
cbor_item_t * cbor_incref(cbor_item_t *item)
Increases the reference count by one. 
bool cbor_isa_tag(const cbor_item_t *item)
Does the item have the appropriate major type?