Perform a callback on the fully-qualified name of each reference.
The callback function will be called for each reference in the
repository, receiving the name of the reference and the payload value
passed to this method. Returning a non-zero value from the callback
will terminate the iteration.
Perform a callback on the fully-qualified name of each reference.
The callback function will be called for each reference in the repository, receiving the name of the reference and the payload value passed to this method. Returning a non-zero value from the callback will terminate the iteration.