public List<ArtifactVersion> getAvailableVersions() {
        return artifact.getAvailableVersions();
    }

    /** {@inheritDoc} */
    @Override
    public void setAvailableVersions(List<ArtifactVersion> versions) {
        artifact.setAvailableVersions(versions);
    }

    /** {@inheritDoc} */
    @Override
    public boolean isOptional() {
        return artifact.isOptional();
    }

        return release;
    }

    @Override
    public List<ArtifactVersion> getAvailableVersions() {
        return availableVersions;
    }

    @Override
    public void setAvailableVersions(List<ArtifactVersion> availableVersions) {
        this.availableVersions = availableVersions;
    }

    @Override
    public boolean isOptional() {
        return optional;
    }

    }

    @Override
    public List<ArtifactVersion> getAvailableVersions() {
        return parent.getAvailableVersions();
    }

    @Override
    public void setAvailableVersions(List<ArtifactVersion> availableVersions) {
        throw new UnsupportedOperationException("Cannot change the version information for an attached artifact."
                + " It is derived from the main artifact.");
    }

                                            versions = source.retrieveAvailableVersions(metadataRequest);
                                            resetArtifact.setAvailableVersions(versions);
                                        } catch (ArtifactMetadataRetrievalException e) {
                                            resetArtifact.setDependencyTrail(node.getDependencyTrail());

                            metadataRequest.setArtifact(artifact);
                            available = retrieveAvailableVersions(metadataRequest);
                            artifact.setAvailableVersions(available);
                        }

                        String message = "  this artifact has been relocated to " + artifact.getGroupId() + ":"