}
            }
        }

        return model;
    }

    @Override
    public File findArtifact(Artifact artifact) {
        requireNonNull(artifact, "artifact cannot be null");
        File file = null;

        for (WorkspaceReader reader : readers) {
            file = reader.findArtifact(artifact);
            if (file != null) {
                break;
            }
        }

        return repository;
    }

    @Override
    public File findArtifact(Artifact artifact) {
        MavenProject project = getProject(artifact);

        if (project != null) {
            File file = findArtifact(project, artifact, true);
            if (file == null && project != project.getExecutionProject()) {
                file = findArtifact(project.getExecutionProject(), artifact, true);
            }

    @Override
    public WorkspaceRepository getRepository() {
        return WORKSPACE_REPOSITORY;
    }

    @Override
    public File findArtifact(Artifact artifact) {
        return null;
    }

    @Override
    public List<String> findVersions(Artifact artifact) {
        return Collections.emptyList();
    }

    @Override

        if (workspace == null) {
            return true;
        }

        Artifact pomArtifact = ArtifactDescriptorUtils.toPomArtifact(artifact);

        return workspace.findArtifact(pomArtifact) == null;
    }

    private static class VersionInfo {

        String timestamp;

        String version;

        ArtifactRepository repository;