* @return
*/
public static final boolean checkContextUri(String contextUri) {
StatementIterator stmtit = null;
try {
Graph g = Repository.MAIN_REPOSITORY.getLocalRepository().getGraph();
stmtit = g.getStatements(g.getValueFactory().createURI(contextUri),
g.getValueFactory().createURI(RDF.TYPE),
MBB_BROWSECONTEXT.getURI(g));
} catch (AccessDeniedException e) {
Repository.logger.warning("problems when checking context URI: "+e);
}