public static Version get(String artifactId, ClassLoader classLoader) {
        requireNonNull(artifactId, "artifactId");
        final Version version = getAll(classLoader).get(artifactId);
        if (version != null) {
            return version;
        }
        return new Version(
                artifactId,
                "unknown",
                0,
                "unknown",
                "unknown",
                "unknown");
    }
Returns the version information for the Armeria artifact named {@code artifactId} using the specified
{@link ClassLoader}. If information for the artifact can't be found, a default value is returned
with arbitrary {@code unknown} values.
core/src/main/java/com/linecorp/armeria/common/util/Version.java