if (request.getRequestType() != DependencyResolverRequest.RequestType.COLLECT) {
            throw new IllegalArgumentException("requestType should be COLLECT when calling collect()");
        }
        return resolve(request);
    }

    /**
     * Flattens a list of nodes.

 * either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.exception;

/**
 * This exception is thrown when a script engine error occurs.
 */
public class ScriptEngineException extends FessSystemException {

    private static final long serialVersionUID = 1L;

    /**
     * Constructor.

# Apache Maven Encrypt Script
#
# Environment Variable Prerequisites
#
#   JAVA_HOME           (Optional) Points to a Java installation.
#   MAVEN_OPTS          (Optional) Java runtime options used when Maven is executed.
#   MAVEN_SKIP_RC       (Optional) Flag to disable loading of mavenrc files.
# -----------------------------------------------------------------------------

# Apache Maven Encrypt Script
#
# Environment Variable Prerequisites
#
#   JAVA_HOME           (Optional) Points to a Java installation.
#   MAVEN_OPTS          (Optional) Java runtime options used when Maven is executed.
#   MAVEN_SKIP_RC       (Optional) Flag to disable loading of mavenrc files.
# -----------------------------------------------------------------------------

          ConcatenatedIterator<T> topConcat = (ConcatenatedIterator<T>) iterator;
          iterator = topConcat.iterator;

          // topConcat.topMetaIterator, then topConcat.metaIterators, then this.topMetaIterator,
          // then this.metaIterators

          if (this.metaIterators == null) {
            this.metaIterators = new ArrayDeque<>();
          }

          ConcatenatedIterator<T> topConcat = (ConcatenatedIterator<T>) iterator;
          iterator = topConcat.iterator;

          // topConcat.topMetaIterator, then topConcat.metaIterators, then this.topMetaIterator,
          // then this.metaIterators

          if (this.metaIterators == null) {
            this.metaIterators = new ArrayDeque<>();
          }

   * safe range. If {@code safeMax < safeMin} then no code points are considered safe. This
   * initializer is useful when explicit instances of ArrayBasedEscaperMap are used to allow the
   * sharing of large replacement mappings.
   *
   * <p>If a code point has no mapped replacement then it is checked against the safe range. If it
   * lies outside that, then {@link #escapeUnsafe} is called, otherwise no escaping is performed.
   *

     * <i>Note:</i> This will not automagically make a mojo run when the plugin declaration is added to the POM. It
     * merely enables the user to omit the <code>&lt;phase&gt;</code> element from the surrounding
     * <code>&lt;execution&gt;</code> element.
     */
    private String phase;

    /** Specify the version when the Mojo was added to the API. Similar to Javadoc since. */
    private String since;

   * instance, since {@code PermittedExceptions} is thrown only when a method call is invalid.
   *
   * <p>This class is accessible but not supported in GWT as it references {@link
   * PermittedMetaException}.
   */
  protected final class MultiExceptionListIterator implements ListIterator<E> {
    // TODO: track seen elements when order isn't guaranteed
    // TODO: verify contents afterward

 * provided {@code standardAddAll} method.
 *
 * <p><b>{@code default} method warning:</b> This class does <i>not</i> forward calls to {@code
 * default} methods. Instead, it inherits their default implementations. When those implementations
 * invoke methods, they invoke methods on the {@code ForwardingSortedSet}.
 *
 * <p>Each of the {@code standard} methods, where appropriate, uses the set's comparator (or the