* that conversion is safe.
   *
   * <p>This method is intended to help with usages of type parameters that have {@linkplain
   * ParametricNullness parametric nullness}. If a type parameter instead ranges over only non-null
   * types (or if the type is a non-variable type, like {@code String}), then code should almost
   * never use this method, preferring instead to call {@code requireNonNull} so as to benefit from
   * its runtime check.
   *

    }

    public String getInput() {
        return input;
    }

    public String getOutput() {
        return output;
    }

    public boolean isUpdated() {
        return newInput != null && newOutput != null;
    }

    public boolean isDeleted() {
        return isUpdated() && StringUtil.isBlank(newInput);
    }

    @Override
    public int hashCode() {
        return Objects.hash(input, output);

                artifact.getGroupId(),
                artifact.getArtifactId(),
                artifact.getVersion(),
                artifact.getType(),
                artifact.getClassifier(),
                null,
                artifact.getDownloadUrl(),
                artifact.getDependencyTrail());
    }

    protected ArtifactNotFoundException(

        this.elevateWord = elevateWord;
        this.boost = boost;
        this.readings = readings;
        this.fields = fields;
        if (tags == null) {
            this.tags = Collections.emptyList();
        } else {
            this.tags = tags;
        }
        if (roles == null) {
            this.roles = Collections.emptyList();
        } else {
            this.roles = roles;
        }
    }

        if (urlQueue == null) {
            return;
        }

        final String url = urlQueue.getUrl();
        if (StringUtil.isBlank(url) || url.startsWith("file:")) {
            // not target
            return;
        }

        try {
            final URL u = new URL(url);
            final String host = u.getHost();
            if (host == null) {
                return;
            }

     *             installation has failed.
     * @throws IllegalArgumentException in case of parameter {@code request} is {@code null} or parameter
     *             {@code localRepository} is {@code null} or {@code localRepository} is not a directory
     *             or parameter {@code mavenArtifacts} is {@code null} or
     *             {@code mavenArtifacts.isEmpty()} is {@code true}.
     */

     * @param context The environmental context used to determine the activation status of the profile, must not be
     *            {@code null}.
     * @param problems The container used to collect problems (e.g. bad syntax) that were encountered, must not be
     *            {@code null}.
     * @return {@code true} if the profile is active, {@code false} otherwise.

     *            false} to use the update policy configured on each repository.
     * @return This request, never {@code null}.
     */
    RepositoryRequest setForceUpdate(boolean forceUpdate);

    /**
     * Gets the local repository to use.
     *
     * @return The local repository to use or {@code null} if not set.
     */
    ArtifactRepository getLocalRepository();

    /**
     * Sets the local repository to use.

internal fun Regex.matchAtPolyfill(
  input: CharSequence,
  index: Int,
): MatchResult? {
  val candidate = find(input, index) ?: return null
  if (candidate.range.first != index) return null // Didn't match where it should have.
  return candidate
}

@JvmField
val EMPTY_BYTE_ARRAY: ByteArray = ByteArray(0)

/** Byte order marks. */
internal val UNICODE_BOMS =

        try {
            SmbFileHandleImpl h = this.handle;
            if ( h != null ) {
                h.close();
            }
        }
        catch ( SmbException se ) {
            throw seToIoe(se);
        }
        finally {
            this.tmp = null;
            this.handle = null;
            if ( this.unsharedFile ) {
                this.file.close();
            }
        }