### Question:
MavenContentHelper { public static String getNamespaceFromNamespacePath( final StorageAsset namespacePath) { LinkedList<String> names = new LinkedList<>( ); StorageAsset current = namespacePath; while (current.hasParent()) { names.addFirst( current.getName() ); current = current.getParent( ); } return String.join( ".", names ); } MavenContentHelper(); void setMetadataReader( MavenMetadataReader metadataReader ); static String getNamespaceFromNamespacePath( final StorageAsset namespacePath); String getArtifactVersion( StorageAsset artifactDir, ItemSelector selector); String getLatestArtifactSnapshotVersion( StorageAsset artifactDir, String snapshotVersion); static final Pattern UNIQUE_SNAPSHOT_NUMBER_PATTERN; static final String METADATA_FILENAME; static final String METADATA_REPOSITORY_FILENAME; }### Answer:
@Test void getNamespaceFromNamespacePath( ) { StorageAsset asset = storage.getAsset( "org/apache/archiva" ); String ns = MavenContentHelper.getNamespaceFromNamespacePath( asset ); assertNotNull( ns ); assertEquals( "org.apache.archiva", ns ); asset = storage.getRoot(); ns = MavenContentHelper.getNamespaceFromNamespacePath( asset ); assertNotNull( ns ); assertEquals( "", ns ); }