bson_iter_code()
Synopsis
#define BSON_ITER_HOLDS_CODE(iter) \
   (bson_iter_type ((iter)) == BSON_TYPE_CODE)
const char *
bson_iter_code (const bson_iter_t *iter,
                uint32_t          *length);Parameters
iter  | 
A bson_iter_t.  | 
length  | 
A location for the length of the UTF-8 encoded string or NULL.  | 
Description
This function returns the contents of a BSON_TYPE_CODE field. The length of the string is stored in length if non-NULL.
It is invalid to call this function on a field that is not of type BSON_TYPE_CODE.
Returns
A UTF-8 encoded string which should not be modified or freed.