question: public long postGraphML ( final String path ) throws Exception { final UUID uuid = UUID . randomUUID ( ) ; final ConnectOptions opts = mgr . newConnectOptions ( sparqlEndpointURL , uuid , tx ) ; opts . addRequestParam ( "blueprints" ) ; JettyResponseListener response = null ; try { final File file = new File ( path ) ; if ( ! file . exists ( ) ) { throw new RuntimeException ( "cannot locate file: " + file . getAbsolutePath ( ) ) ; } final byte [ ] data = IOUtil . readBytes ( file ) ; final ByteArrayEntity entity = new ByteArrayEntity ( data ) ; entity . setContentType ( ConnectOptions . MIME_GRAPH_ML ) ; opts . entity = entity ; opts . setAcceptHeader ( ConnectOptions . MIME_APPLICATION_XML ) ; checkResponseCode ( response = doConnect ( opts ) ) ; final MutationResult result = mutationResults ( response ) ; return result . mutationCount ; } finally { if ( response != null ) response . abort ( ) ; } }
target:  Post a GraphML file to the blueprints layer of the remote bigdata instance.