@_factories.addMelDocs('file', 'copyNumberList')
    def copyNumberList(self):
        return cmds.file( self, q=1, copyNumberList=1 )
If rollback fails, L{ConnectionPool.runInteraction} raises the
dataset/ETHPy150Open CountZer0/PipelineConstructionSet/python/maya/site-packages/pymel-1.0.3/pymel/core/system.py/FileReference.copyNumberList--crossover with--dataset/ETHPy150Open twisted/twisted/twisted/test/test_adbapi.py/ConnectionPoolTests.test_runWithInteractionRaiseOriginalError