/**
 * Abstract base class for document ingesters that process and transform documents
 * before they are indexed. Ingesters can be used to modify document content,
 * extract additional metadata, or perform other transformations during the
 * indexing process.
 *
 * Ingesters are processed in priority order, with lower numbers having higher priority.
 */
public abstract class Ingester {

            return dataMap;
        }
        Map<String, Object> target = dataMap;
        for (final Ingester ingester : ingestFactory.getIngesters()) {
            try {
                target = ingester.process(target, paramMap);
            } catch (final Exception e) {
                logger.warn("[{}] Failed to process ingester", ingester.getClass().getSimpleName(), e);
            }
        }
        return target;
    }

            return map;
        }
        Map<String, Object> target = map;
        for (final Ingester ingester : ingestFactory.getIngesters()) {
            try {
                target = ingester.process(target, accessResult);
            } catch (final Exception e) {
                logger.warn("Failed to process Ingest[{}]", ingester.getClass().getSimpleName(), e);
            }
        }
        return target;
    }

        @Override
        public Ingester[] getIngesters() {
            return new Ingester[] { new TestIngester(throwException) };
        }

        public void setThrowException(boolean throwException) {
            this.throwException = throwException;
        }
    }

    private static class TestIngester extends Ingester {
        private final boolean throwException;