def _reverse_path(path):
    path_parts = path.split(_PATH_CELL_SEP)
    path_parts.reverse()
    return _PATH_CELL_SEP.join(path_parts)
Check all of the items and make sure they are valid.  This operates in
dataset/ETHPy150Open BU-NU-CLOUD-SP16/Trusted-Platform-Module-nova/nova/cells/messaging.py/_reverse_path--crossover with--dataset/ETHPy150Open girder/girder/girder/models/item.py/Item.checkConsistency