def getBuilderWindow():
    """ getBuilderWindow() -> QMainWindow
    Return the current builder window of VisTrails if exists    
    """
    try:
        return QtCore.QCoreApplication.instance().builderWindow
    except __HOLE__:
        return None
dataset/ETHPy150Open VisTrails/VisTrails/vistrails/gui/utils.py/getBuilderWindow