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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def write_example_yaml(cls, dest, skip=()):
 """ Write a file containing an example yaml string for a Serializable subclass. """

        # Make sure we can make an instance before we open a file.
        inst = cls.example_instance(skip=skip)
        with open(dest, 'w') as f:
            inst.to_yaml(stream=f, skip=skip)