def a_classmethod(cls, v):
        return v+2
Handle 'insert item' being selected from the header context menu.
dataset/ETHPy150Open babble/babble/include/jython/Lib/test/test_doctest.py/SampleClass.a_classmethod--crossover with--dataset/ETHPy150Open enthought/traitsui/traitsui/qt4/table_editor.py/TableEditor._on_context_insert