assertNull(range.getRecommendedVersion(), CHECK_VERSION_RECOMMENDATION);
        assertFalse(range.isSelectedVersionKnown(artifact), CHECK_SELECTED_VERSION_KNOWN);
        assertNull(range.getSelectedVersion(artifact), CHECK_SELECTED_VERSION);

        range = VersionRange.createFromVersionSpec("1.0");
        assertEquals("1.0", range.getRecommendedVersion().toString(), CHECK_VERSION_RECOMMENDATION);

    }

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

    @Override
    public ArtifactVersion getSelectedVersion() throws OverConstrainedVersionException {
        return versionRange.getSelectedVersion(this);
    }

    @Override
    public boolean isSelectedVersionKnown() throws OverConstrainedVersionException {

                } else {
                    done = true;
                }
            }
        }

        return restrictions;
    }

    public ArtifactVersion getSelectedVersion(Artifact artifact) throws OverConstrainedVersionException {
        ArtifactVersion version;
        if (recommendedVersion != null) {
            version = recommendedVersion;
        } else {

                                                    childRemoteRepositories);
                                        }
                                    } else {
                                        version = artifact.getSelectedVersion();
                                    }

                                    artifact.selectVersion(version.toString());