Create the new pack and pass each object to the callback
@param pb the packbuilder @param cb the callback to call with each packed object's buffer @param payload the callback's data @return 0 or an error code
See Implementation
Create the new pack and pass each object to the callback
@param pb the packbuilder @param cb the callback to call with each packed object's buffer @param payload the callback's data @return 0 or an error code