} catch (final Exception e) {
                logger.warn("Failed to update scores.", e);
                resultBuf.append(e.getMessage()).append('\n');
            }
        });
        return resultBuf.toString();
    }

    protected void addScoreBooster(final ScoreBooster scoreBooster) {
        scoreBoosterList.add(scoreBooster);

            return model;
        } catch (XMLStreamException e) {
            Location location = e.getLocation();
            throw new ModelParseException(
                    e.getMessage(),
                    location != null ? location.getLineNumber() : -1,
                    location != null ? location.getColumnNumber() : -1,
                    e);
        } catch (Exception e) {

                            return problem.getException();
                        }

                        @Override
                        public String getMessage() {
                            return problem.getMessage();
                        }

                        @Override
                        public Severity getSeverity() {

                logger.warn(problem.getMessage());
            } else if (problem.getSeverity() == SettingsProblem.Severity.ERROR) {
                logger.error(
                        problem.getMessage(),
                        request.isShowErrors()
                                ? problem.getException()
                                : problem.getException().getMessage());
            }
        }

    public ModelValidationResult() {
        messages = new ArrayList<>();
    }

    public int getMessageCount() {
        return messages.size();
    }

    public String getMessage(int i) {
        return messages.get(i);
    }

    public List<String> getMessages() {
        return Collections.unmodifiableList(messages);
    }

    public void addMessage(String message) {

        NullPointerException e = assertThrows(
                NullPointerException.class, () -> new UrlSource(null), "Should fail, since you must specify a url");
        assertEquals("url cannot be null", e.getMessage());
    }

    @Test
    void testGetInputStream() throws Exception {
        URL txtFile = new File("target/test-classes/source.txt").toURI().toURL();
        UrlSource source = new UrlSource(txtFile);

        try {
            return CommonsCliEncryptOptions.parse(args.toArray(new String[0]));
        } catch (ParseException e) {
            throw new ParserException("Failed to parse command line options: " + e.getMessage(), e);
        }
    }

    @Override
    protected EncryptOptions assembleOptions(List<EncryptOptions> parsedOptions) {
        // nothing to assemble, we deal with CLI only
        return parsedOptions.get(0);

            if (logger.isInfoEnabled()) {
                final StringBuilder buf = new StringBuilder(100);
                buf.append(e.getMessage());
                if (e.getCause() != null) {
                    buf.append(e.getCause().getMessage());
                }
                logger.info(buf.toString());
            } else if (logger.isDebugEnabled()) {

                NullPointerException.class,
                () -> new FileSource((File) null),
                "Should fail, since you must specify a file");
        assertEquals("file cannot be null", e.getMessage());
    }

    @Test
    void testGetInputStream() throws Exception {
        File txtFile = new File("target/test-classes/source.txt");
        FileSource source = new FileSource(txtFile);

            .put("one", 1); // throwing on this line would be even better

    IllegalArgumentException expected =
        assertThrows(IllegalArgumentException.class, () -> builder.build());
    assertThat(expected.getMessage()).contains("one");
  }

  public void testOf() {
    assertMapEquals(ImmutableBiMap.of("one", 1), "one", 1);
    assertMapEquals(ImmutableBiMap.of("one", 1).inverse(), 1, "one");