dispatcher.onEvent(event);
        delegate.metadataInstalling(event);
    }

    @Override
    public void metadataInvalid(RepositoryEvent event) {
        dispatcher.onEvent(event);
        delegate.metadataInvalid(event);
    }

    @Override
    public void metadataResolved(RepositoryEvent event) {
        dispatcher.onEvent(event);

                logger.warn(e.getMessage(), e);
            } else {
                logger.warn(e.getMessage());
            }
        }
    }

    @Override
    public void metadataInvalid(RepositoryEvent event) {
        Exception exception = event.getException();

        Object metadata;
        if (event.getMetadata().getFile() != null) {
            metadata = event.getMetadata().getFile();

            event.setTrace(trace);
            event.setMetadata(metadata);
            event.setException(exception);
            event.setRepository(repository);
            listener.metadataInvalid(event.build());
        }
    }

            event.setTrace(trace);
            event.setMetadata(metadata);
            event.setException(exception);
            event.setRepository(repository);
            listener.metadataInvalid(event.build());
        }
    }

    private void mergeMetadata(Versions versions, Metadata source, ArtifactRepository repository) {
        Versioning versioning = source.getVersioning();