* progress of operations.
 */
public class ProgressLogEventGenerator implements OutputEventListener {
    private static final String EOL = SystemProperties.getInstance().getLineSeparator();

    private final OutputEventListener listener;
    private final Map<OperationIdentifier, Operation> operations = new LinkedHashMap<OperationIdentifier, Operation>();

    public ProgressLogEventGenerator(OutputEventListener listener) {

Class <org.gradle.internal.logging.sink.ProgressLogEventGenerator$Operation> is not annotated (directly or via its package) with @org.gradle.api.NonNullApi in (ProgressLogEventGenerator.java:0)
Class <org.gradle.internal.logging.sink.ProgressLogEventGenerator$State> is not annotated (directly or via its package) with @org.gradle.api.NonNullApi in (ProgressLogEventGenerator.java:0)