def ipfunc():
    return 'ipfunc'
Check if any of common parent of the tab controller and tb
dataset/ETHPy150Open ipython/ipython-py3k/IPython/testing/plugin/dtexample.py/ipfunc--crossover with--dataset/ETHPy150Open VisTrails/VisTrails/vistrails/packages/spreadsheet/spreadsheet_tab.py/StandardTabDockWidget.isTabControllerUnderMouse