StringBuilder buffer = new StringBuilder(256);

        buffer.append(LS).append("Artifact Metadata").append(LS).append("--------------------------");
        buffer.append(LS).append("GroupId: ").append(getGroupId());
        buffer.append(LS).append("ArtifactId: ").append(getArtifactId());
        buffer.append(LS).append("Metadata Type: ").append(getClass().getName());

        return buffer.toString();
    }

class ToolchainsBuildingExceptionTest {
    private static final String LS = System.lineSeparator();

    @Test
    void testNoProblems() {
        ToolchainsBuildingException e = new ToolchainsBuildingException(Collections.<Problem>emptyList());
        assertEquals("0 problems were encountered while building the effective toolchains" + LS, e.getMessage());
    }

    @Test
    void testOneProblem() {

        }

        buffer.append("----------").append(LS);

        int size = artifacts.size();

        buffer.append(size).append(" required artifact");

        if (size > 1) {
            buffer.append("s are");
        } else {
            buffer.append(" is");
        }

        buffer.append(" missing.").append(LS).append(LS).append("for artifact: ");

        return buffer.toString();

        String expected = "Missing artifact" + LS + LS + "  Try downloading the file manually from: " + LS
                + "      http://somewhere.com/download" + LS + LS + "  Then, install it using the command: " + LS
                + "      mvn install:install-file -DgroupId=aGroupId -DartifactId=anArtifactId -Dversion=aVersion "
                + "-Dclassifier=aClassifier -Dpackaging=jar -Dfile=/path/to/file" + LS + LS

        StringBuilder buffer = new StringBuilder(256);

        buffer.append(LS).append("Repository Metadata").append(LS).append("--------------------------");
        buffer.append(LS).append("GroupId: ").append(getGroupId());
        buffer.append(LS).append("ArtifactId: ").append(getArtifactId());
        buffer.append(LS).append("Metadata Type: ").append(getClass().getName());

        return buffer.toString();
    }

                sb.append(LS);
                sb.append(LS);
                sb.append(indentation);
                sb.append("Try downloading the file manually from: ");
                sb.append(LS);
                sb.append(indentation);
                sb.append("    ");
                sb.append(downloadUrl);
            } else {
                sb.append(LS);
                sb.append(LS);

                .append("REQUEST: ")
                .append(LS)
                .append("artifact: ")
                .append(artifact)
                .append(LS)
                .append(artifactDependencies)
                .append(LS)
                .append("localRepository: ")
                .append(localRepository)
                .append(LS)
                .append("remoteRepositories: ")

        //        }
        //
        for (int i = 0; i < messages.size(); i++) {
            message.append(indentation)
                    .append('[')
                    .append(i)
                    .append("]  ")
                    .append(messages.get(i))
                    .append(LS);
        }

        return message.toString();
    }

        if (artifacts != null) {
            int i = 1;
            sb.append("---------").append(LS);
            sb.append(artifacts.size()).append(LS);
            for (Artifact a : artifacts) {
                sb.append(i).append(' ').append(a).append(LS);
                i++;
            }
            sb.append("---------");
        }

        return sb.toString();
    }

    public static String showVersion(String commandLine, String terminal) {
        final String ls = System.lineSeparator();
        Properties properties = getBuildProperties();
        StringBuilder version = new StringBuilder(256);
        version.append(MessageUtils.builder().strong(createMavenVersionString(properties)))
                .append(ls);
        version.append(reduce(properties.getProperty("distributionShortName") + " home: "