def add_before ( self ):
        self.add_item( 0 )

    #---------------------------------------------------------------------------
    #  Inserts a new item after the current item:
    #---------------------------------------------------------------------------
Upgrade bcbio-nextgen-vm wrapper code.
dataset/ETHPy150Open enthought/traitsui/traitsui/wx/list_editor.py/SimpleEditor.add_before--crossover with--dataset/ETHPy150Open chapmanb/bcbio-nextgen-vm/bcbiovm/docker/install.py/upgrade_bcbio_vm