Page Comparison

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What should be done in this module:
      - create a Reader extending base functionality (CsvItemReader.java, see CirculationLogCsvItemReader.java as an example). The reader should retrieve packages/titles using REST clients, taking search parameters from the incoming Kafka event (from job parameters);
      - create a Processor (implementing ItemProcessor). The processor has to take only selected fields for export from the incoming packages/titles. The list of fields for export comes from job parameters; [Use 2 processors]
      - create a Writer extending base functionality (we can just use CsvWriter.java if nothing special is needed);
      - create a Configuration to build a job and set Reader, Writer, and Processor (see CirculationLogJobConfig.java);

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