}
            }
        }

        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;
            }
        }

    @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