*
 * <p>Default settings and array settings can be customized using:</p>
 * <ul>
 *   <li>{@link #defaultSettings()}</li>
 *   <li>{@link #defaultArraySettings()}</li>
 * </ul>
 *
 * <p>Index settings can be loaded from a JSON file using:</p>
 * <ul>
 *   <li>{@link #loadIndexSettings()}</li>
 * </ul>
 *
 * <p>A builder for SuggestSettings can be obtained using:</p>
 * <ul>
 *   <li>{@link #builder()}</li>
 * </ul>
 *

import java.util.Map;
import java.util.Set;
import java.util.concurrent.atomic.AtomicBoolean;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.apache.pdfbox.Loader;
import org.apache.pdfbox.cos.COSInputStream;
import org.apache.pdfbox.io.RandomAccessReadBuffer;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDDocumentInformation;