def METHOD_NAME(self):
    inst = self._makeOne()
    inst._setProperty('prop', ['xxx', 'yyy'], 'lines')
    self.assertIsInstance(inst.getProperty('prop'), tuple)
    self.assertIsInstance(inst.prop, tuple)
    inst._setPropValue('prop', ['xxx', 'yyy'])
    self.assertIsInstance(inst.getProperty('prop'), tuple)
    self.assertIsInstance(inst.prop, tuple)
    inst._updateProperty('prop', ['xxx', 'yyy'])
    self.assertIsInstance(inst.getProperty('prop'), tuple)
    self.assertIsInstance(inst.prop, tuple)
    inst.manage_addProperty('prop2', ['xxx', 'yyy'], 'lines')
    self.assertIsInstance(inst.getProperty('prop2'), tuple)
    self.assertIsInstance(inst.prop2, tuple)