throw new IllegalArgumentException(error);
        }

        final Deferred<T> deferred = new Deferred<>();
        try {
            processRequest(client, deferred);
        } catch (final Exception e) {
            throw new SuggesterException(e);
        }
        return deferred.promise();
    }

    protected abstract void processRequest(Client client, Deferred<T> deferred);

            }
        };

        Set<String> roleSet;

        try {
            roleSet = buildByHeader(roleQueryHelperImpl, getMockRequest());
            fail();
        } catch (final NullPointerException e) {
            //ok
        }

        roleQueryHelperImpl.headerKey = "fess1";

        getMockRequest().addHeader("aaa", "bbb");

            if (mimetype != null) {
                return mimetype;
            }
            return URLConnection.guessContentTypeFromName(path);
        } catch (final IOException e) {
            throw new IORuntimeException(e);
        } finally {
            CloseableUtil.close(is);
        }
    }

        setEncoding((String) src.get(ENCODING));
        final String dataStr = (String) src.get(DATA);
        if (dataStr != null) {
            try {
                setData(Base64Util.decode(dataStr));
            } catch (final Exception e) {
                throw new OpenSearchAccessException("data: " + dataStr, e);
            }
        }
    }

    @Override

    public OptionalEntity<ScheduledJob> selectByPK(final String id) {
        Exception lastException = null;
        for (int i = 0; i < 30; i++) {
            try {
                return super.selectByPK(id);
            } catch (final Exception e) {
                if (logger.isDebugEnabled()) {
                    logger.debug("Failed to select a job by {}", id, e);
                }
                lastException = e;

        }
        ResultData target = resultData;
        for (final Ingester ingester : ingestFactory.getIngesters()) {
            try {
                target = ingester.process(target, responseData);
            } catch (final Exception e) {
                logger.warn("Failed to process Ingest[{}]", ingester.getClass().getSimpleName(), e);
            }
        }
        return target;
    }

        if ( server == null ) {
            server = "\\\\";
        }
        MsrpcSamrConnect4 rpc = new MsrpcSamrConnect4(server, access, this);
        try {
            handle.sendrecv(rpc);
        }
        catch ( DcerpcException de ) {
            if ( de.getErrorCode() != DcerpcError.DCERPC_FAULT_OP_RNG_ERROR ) {
                throw de;
            }
            MsrpcSamrConnect2 rpc2 = new MsrpcSamrConnect2(server, access, this);

            try (InputStream in = Files.newInputStream(userToolchainsFile.toPath())) {
                toolchains = new PersistedToolchains(new MavenToolchainsStaxReader().read(in));
            } catch (Exception e) {
                throw new MisconfiguredToolchainException(
                        "Cannot read toolchains file at " + userToolchainsFile.getAbsolutePath(), e);
            }

        //    } else {
        //        return null;
        //    }
        //}
        //try {
        //    return CDef.DefMeta.valueOf(searchName);
        //} catch (IllegalArgumentException ignored) { // not found
        //    return null; // handled later
        //}
    }

    @Override
    public OptionalThing<String> determineAlias(final Locale locale) {

  public void testAddAll_unsupportedNothing() {
    try {
      assertFalse(
          "addAll(nothing) should return false or throw", collection.addAll(emptyCollection()));
    } catch (UnsupportedOperationException tolerated) {
    }
    expectUnchanged();
  }

  @CollectionFeature.Require(SUPPORTS_ADD)
  public void testAddAll_supportedNonePresent() {
    assertTrue(