Select all dag nodes of the given reftrack

    :param reftrack: The reftrack to select the dagnodes for
    :type reftrack: :class:`jukeboxcore.reftrack.Reftrack`
    :returns: None
    :rtype: None
    :raises: None

def select_dag_nodes(reftrack):
    """Select all dag nodes of the given reftrack

    :param reftrack: The reftrack to select the dagnodes for
    :type reftrack: :class:`jukeboxcore.reftrack.Reftrack`
    :returns: None
    :rtype: None
    :raises: None
    """
    refobj = reftrack.get_refobj()
    if not refobj:
        return
    parentns = common.get_namespace(refobj)
    ns = cmds.getAttr("%s.namespace" % refobj)
    fullns = ":".join((parentns.rstrip(":"), ns.lstrip(":")))
    c = cmds.namespaceInfo(fullns, listOnlyDependencyNodes=True, dagPath=True, recurse=True)
    dag = cmds.ls(c, dag=True, ap=True)
    cmds.select(dag, replace=True)