}
        }
    }

    public String format(long size) {
        return format(size, null);
    }

    public String format(long size, ScaleUnit unit) {
        return format(size, unit, false);
    }

    public String format(long size, ScaleUnit unit, boolean omitSymbol) {
        StringBuilder sb = new StringBuilder();
        format(sb, size, unit, omitSymbol);
        return sb.toString();

    public static final String DEFAULT_BUILD_TIMESTAMP_FORMAT = "yyyy-MM-dd'T'HH:mm:ss'Z'";

    public static final String BUILD_TIMESTAMP_FORMAT_PROPERTY = "maven.build.timestamp.format";

    public static final TimeZone DEFAULT_BUILD_TIME_ZONE = TimeZone.getTimeZone("Etc/UTC");

    private String formattedTimestamp;

    public MavenBuildTimestamp() {
        this(Instant.now());
    }

        assertContains(String.format("%s: %%s should not be contained\n", c.toString()), c, false, versions);
    }

    private void assertContains(String msg, VersionConstraint c, boolean b, String... versions) {
        for (String v : versions) {
            assertEquals(b, c.contains(versionParser.parseVersion(v)), String.format(msg, v));
        }
    }

     * @return The deserialized model, never {@code null}.
     * @throws IOException If the model could not be deserialized.
     * @throws XmlReaderException If the input format could not be parsed.
     */
    Model read(XmlReaderRequest request) throws IOException, XmlReaderException;

/**
 * Result of a project build call.
 *
 * @since 4.0.0
 */
@Experimental
public interface ProjectBuilderResult {

    /**
     * Gets the identifier of the project that could not be built. The general format of the identifier is {@code
     * <groupId>:<artifactId>:<version>} but some of these coordinates may still be unknown at the point the exception
     * is thrown so this information is merely meant to assist the user.
     *

import java.util.Objects;

import org.apache.maven.artifact.repository.metadata.Metadata;
import org.apache.maven.metadata.v4.MetadataStaxReader;

/**
 * Handles deserialization of metadata from some kind of textual format like XML.
 *
 */
@Named
@Singleton
public class DefaultMetadataReader implements MetadataReader {

    public Metadata read(File input, Map<String, ?> options) throws IOException {

        if (sources == null) {
            return null;
        }
        return sources.stream()
                .reduce((a, b) -> {
                    throw new IllegalStateException(String.format(
                            "No unique Source for %s:%s: %s and %s",
                            groupId, artifactId, a.getLocation(), b.getLocation()));
                })
                .orElse(null);
    }

        message.style(STYLE).append(" (").append(format.format(contentLength));

        long duration = System.currentTimeMillis() - resource.getTransferStartTime();
        if (duration > 0L) {
            double bytesPerSecond = contentLength / (duration / 1000.0);
            message.append(" at ");
            format.format(message, (long) bytesPerSecond);
            message.append("/s");
        }

                // Message below is checked for in the MNG-2199 core IT.
                throw new ModelResolverException(
                        String.format("The requested version range '%s' does not specify an upper bound", version),
                        groupId,
                        artifactId,
                        version);
            }

 * is meant for exclusive consumption by the model builder and is opaque to the cache implementation. The cache key is
 * formed by a combination of group id, artifact id, version and tag. The first three components generally refer to the
 * identity of a model. The tag allows for further classification of the associated data on the sole discretion of the