}

  private static void assertErrorMessage(Throwable e, String message) {
    // TODO(kevinb): use a Truth assertion here
    if (!e.getMessage().contains(message)) {
      fail("expected <" + e.getMessage() + "> to contain <" + message + ">");
    }
  }

  /**
   * Test class with valid equals and hashCode methods. Testers created with instances of this class

            writer.println();
            writer.print("    - [");
            writer.print(problem.getSeverity());
            writer.print("] ");
            writer.print(problem.getMessage());
            String location = ModelProblemUtils.formatLocation(problem, modelId);
            if (!location.isEmpty()) {
                writer.print(" @ ");
                writer.print(location);
            }

            }
        }

        try {
            repoSystem.install(session, request);
        } catch (InstallationException e) {
            throw new ArtifactInstallationException(e.getMessage(), e);
        }

        /*
         * NOTE: Not used by Maven core, only here to provide backward-compat with plugins like the Install Plugin.
         */

        if (artifact.isSnapshot()) {

            deferred.promise().getResponse(10, TimeUnit.SECONDS);
            fail();
        } catch (SuggesterException e) {
            assertEquals("org.codelibs.fess.suggest.exception.SuggesterException: test", e.getMessage());
        }
    }

                artifact.updateVersion(version, request.getLocalRepository());
            } catch (RepositoryMetadataResolutionException e) {
                throw new ArtifactResolutionException(e.getMessage(), artifact, e);
            }
        }
    }

    @Override
    public void transformForInstall(Artifact artifact, ArtifactRepository localRepository) {

                    .execute()
                    .actionGet();
                count++;
                Thread.sleep(500);
            } catch(Exception e) {
                Logger.warn(e.getMessage(), e);
            }
        }
    }

    protected void addSubLink(final Queue<String> queue, final String html, final HttpUriRequest request) {
        String schema = request.getURI().getScheme();

            metadata.storeInLocalRepository(localRepo, localRepo);
            merged = true;
        } catch (Exception e) {
            throw new RepositoryException(e.getMessage(), e);
        }
    }

    public boolean isMerged() {
        return merged;
    }

    public String getGroupId() {
        return emptify(metadata.getGroupId());
    }

     */
    Exception getException();

    /**
     * Gets the message that describes this problem.
     *
     * @return The message describing this problem, never {@code null}.
     */
    String getMessage();

    /**
     * Gets the severity level of this problem.
     *
     * @return The severity level of this problem, never {@code null}.
     */
    Severity getSeverity();

                    } catch (InterpolationException e) {
                        problems.add(new ModelProblemCollectorRequest(Severity.ERROR, Version.BASE)
                                .setMessage(e.getMessage())
                                .setException(e));
                    }
                    cache.put(value, c);
                }
                return c;
            }
            return value;

        try {
            return versionParser.parseVersionRange(range);
        } catch (VersionParserException e) {
            throw new AssertionError(range + " should be valid but failed to parse due to: " + e.getMessage(), e);
        }
    }

    private void parseInvalid(String range) {
        try {
            versionParser.parseVersionRange(range);
            fail(range + " should be invalid");