for (String className : entry.getValue()) {
                        warning.append("    * " + className + "\n");
                    }
                    getLogger().warn(warning.toString());
                }
                mappingFileWriter.print(entry.getKey());
                mappingFileWriter.print(":");
                for (String className : entry.getValue()) {

public class ClassDocPropertiesBuilder extends ModelBuilderSupport {
    private final JavadocConverter javadocConverter;
    private final GenerationListener listener;
    private static final Logger LOG = Logging.getLogger(ClassDocPropertiesBuilder.class);

    public ClassDocPropertiesBuilder(JavadocConverter javadocConverter, GenerationListener listener) {
        this.javadocConverter = javadocConverter;
        this.listener = listener;

                    sb.append("ERROR: " + file.getName() + ":" + error.lineNumber + " " + error.message + "\n    " + error.line + "\n");
                }
                String message = sb.toString();
                getLogger().error(message);
                fw.println(message);
            }
        } catch (IOException e) {
            throw new UncheckedIOException(e);
        }

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.LinkedList;

public class DefaultGenerationListener implements GenerationListener {
    private static final Logger LOGGER = LoggerFactory.getLogger(DefaultGenerationListener.class);
    private final LinkedList<String> contextStack = new LinkedList<String>();

    @Override
    public void warning(String message) {