buffer.append("[");
            for (Item item : this) {
                if (buffer.length() > 1) {
                    buffer.append(", ");
                }
                if (item instanceof ListItem) {
                    buffer.append(((ListItem) item).toListString());
                } else {
                    buffer.append(item);
                }
            }

    private static String printHexBinary(byte[] data) {
        StringBuilder r = new StringBuilder(data.length * 2);
        for (byte b : data) {
            r.append(hexCode[(b >> 4) & 0xF]);
            r.append(hexCode[(b & 0xF)]);
        }
        return r.toString();
    }

        // workspace
        if (source == null) {
            try {
                source = container.lookup(ArtifactMetadataSource.class);
            } catch (ComponentLookupException e) {
                // won't happen
            }
        }

        if (listeners == null) {
            listeners = new ArrayList<>();

            if (logger.isDebugEnabled()) {

        StringBuilder sb = new StringBuilder(128);
        sb.append(artifact.getArtifactId());
        sb.append('-').append(artifact.getBaseVersion());
        if (artifact.getClassifier() != null) {
            sb.append('-').append(artifact.getClassifier());
        }
        sb.append('.').append(artifact.getType()).append(LAST_UPDATE_TAG);
        return new File(artifact.getFile().getParentFile(), sb.toString());

            String message) {
        StringBuilder buffer = new StringBuilder(256);
        buffer.append('\'').append(fieldName).append('\'');

        if (sourceHint != null) {
            buffer.append(" for ").append(sourceHint);
        }

        buffer.append(' ').append(message);

        problems.add(new DefaultBuilderProblem(null, -1, -1, null, buffer.toString(), severity));
    }

        /*

        This will not work until the RR plugin is released to get rid of the binding to the reporting exception which is a mistake.

        This happens after removing the reporting API from the core:

        java.lang.NoClassDefFoundError: org/apache/maven/reporting/MavenReportException

            }

            pomArtifact = rel.pomArtifact;

            relocatedArtifact = rel.relocatedArtifact;

            if (rel.project == null) {
                // When this happens we have a Maven 1.x POM, or some invalid POM.
                // It should have never found its way into Maven 2.x repository but it did.
                dependencies = Collections.emptyList();
            } else {

      <plugins>
        <plugin>
          <groupId>org.apache.rat</groupId>
          <artifactId>apache-rat-plugin</artifactId>
          <configuration>
            <excludes combine.children="append">
              <exclude>lifecycle-executor.txt</exclude>
              <exclude>plugin-manager.txt</exclude>
              <exclude>project-builder.txt</exclude>
              <exclude>src/site/resources/design/**</exclude>

        StringBuilder sb = new StringBuilder(128);
        sb.append("Mirror[");
        sb.append("id=").append(this.getId());
        sb.append(",mirrorOf=").append(this.getMirrorOf());
        sb.append(",url=").append(this.getUrl());
        sb.append(",name=").append(this.getName());
        if (isBlocked()) {
            sb.append(",blocked");
        }
        sb.append("]");
        return sb.toString();
    }

      <plugins>
        <plugin>
          <groupId>org.apache.rat</groupId>
          <artifactId>apache-rat-plugin</artifactId>
          <configuration>
            <excludes combine.children="append">
              <exclude>src/assembly/maven/bin/m2.conf</exclude>
              <!-- these are partial scripts, resulting in mvn scripts -->
              <exclude>src/assembly/shared/init</exclude>