THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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First, add the two static methods to the Path class to support serialization and deserialization. Currently, three classes need to serialize/deserialize the Path using the IOReadableWritable interface: FileSourceSplitSerializer/TestManagedSinkCommittableSerializer/TestManagedFileSourceSplitSerializer. Modify these classes to serialize/deserialize the Path using the two static methods instead of IOReadableWritable.
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