code: public InputStream performGraphQuery(String queryString, SPARQLQueryBindingSet bindings, Transaction tx, boolean includeInferred, String baseURI) throws JsonProcessingException {
          return performGraphQuery(queryString, bindings, new InputStreamHandle(), tx, includeInferred, baseURI);
      }
docs: executes GraphQuery
  @param queryString
  @param bindings
  @param tx
  @param includeInferred
  @param baseURI
  @return
  @throws JsonProcessingException