def extension_validator(klass, obj):
    members = [
        '_setup',
        'load_extension',
        'load_extensions',
        'get_loaded_extensions',
    ]
    interface.validate(IExtension, obj, members)
Return item by name or label, disambiguating if necessary with nr.
dataset/ETHPy150Open datafolklabs/cement/cement/core/extension.py/extension_validator--crossover with--dataset/ETHPy150Open deanhiller/databus/webapp/play1.3.x/samples-and-tests/i-am-a-developer/mechanize/ClientForm.py/ListControl.get