def METHOD_NAME(self):
    lines = ['Summary line.',
             '',
             'Args:',
             '   arg1: arg1 description']
    app = mock.Mock()
    app.config = Config()
    _process_docstring(app, 'class', 'SampleClass', SampleClass,
                       mock.Mock(), lines)
    expected = ['Summary line.',
                '',
                ':param arg1: arg1 description',
                '']
    assert expected == lines