An interface that any user class must implement if it wishes to be plugged in at the "transform" tag of a pipeline configuration file.
An implementation of the Transform interface which converts all input text to either upper or lower case.
An implementation of the Transform interface which is configured with a sequence of "subtransforms", and applies them one by one to the input data.
This is the "main" class for this example.
An implementation of the Transform interface which replaces all occurrences of a specified string with a different string.
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