def plug_frame(area, widget, frame, guide):
    if not isinstance(frame, (QDockContainer, QDockWindow)):
        return False
    res = _PLUG_HANDLERS[guide](area, widget, frame, guide)
    if res:
        QApplication.sendEvent(area, QEvent(DockAreaContentsChanged))
    return res
Test if return True when the individuals exist
dataset/ETHPy150Open nucleic/enaml/enaml/qt/docking/layout_handling.py/plug_frame--crossover with--dataset/ETHPy150Open moonso/genmod/tests/utils/test_check_individuals.py/test_correct