* additional documentation, including:
 *
 * <ul>
 *   <li><a
 *       href="https://github.com/google/guava/wiki/GraphsExplained#equals-hashcode-and-graph-equivalence">
 *       {@code equals()}, {@code hashCode()}, and graph equivalence</a>
 *   <li><a href="https://github.com/google/guava/wiki/GraphsExplained#synchronization">
 *       Synchronization policy</a>

 * additional documentation, including:
 *
 * <ul>
 *   <li><a
 *       href="https://github.com/google/guava/wiki/GraphsExplained#equals-hashcode-and-graph-equivalence">
 *       {@code equals()}, {@code hashCode()}, and graph equivalence</a>
 *   <li><a href="https://github.com/google/guava/wiki/GraphsExplained#synchronization">
 *       Synchronization policy</a>

        boolean matched = false;
        for (Iterator<String> i = patterns.iterator(); i.hasNext() & !matched; ) {
            // TODO what about wildcards? Just specifying groups? versions?
            if (id.equals(i.next())) {
                matched = true;
            }
        }
        return matched;
    }

    public List<String> getPatterns() {
        return new ArrayList<>(patterns);
    }

     */
    public boolean equals(Object other) {
        if (this == other) {
            return true;
        } else if (!(other instanceof ToolchainModel)) {
            return false;
        } else {
            ToolchainModel that = (ToolchainModel) other;
            return java.util.Objects.equals(this.getType(), that.getType())
                && java.util.Objects.equals(this.getProvides(), that.getProvides());

        }
        if (DEFAULT_FIELD.equals(field)) {
            return convertDefaultTermQuery(fessConfig, context, termQuery, boost, field, text);
        }
        if (SORT_FIELD.equals(field)) {
            return convertSortQuery(fessConfig, context, termQuery, boost, field, text);
        }
        if (SITE_FIELD.equals(field)) {

  }

  @Override
  public boolean equals(@CheckForNull Object object) {
    if (object == this) {
      return true;
    } else if (object instanceof RegularContiguousSet) {
      RegularContiguousSet<?> that = (RegularContiguousSet<?>) object;
      if (this.domain.equals(that.domain)) {
        return this.first().equals(that.first()) && this.last().equals(that.last());
      }
    }

    }

    @Override
    public boolean equals(final Object obj) {
        if (this == obj) {
            return true;
        }
        if (obj == null || getClass() != obj.getClass()) {
            return false;
        }
        final StemmerOverrideItem other = (StemmerOverrideItem) obj;
        if (!Objects.equals(input, other.input) || !Objects.equals(output, other.output)) {
            return false;
        }

   * equal to each other. If two {@linkplain Object#equals equal} inputs are given to this method,
   * both calls will return the same instance. That is, {@code intern(a).equals(a)} always holds,
   * and {@code intern(a) == intern(b)} if and only if {@code a.equals(b)}. Note that {@code
   * intern(a)} is permitted to return one instance now and a different instance later if the

    /**
     * helper for equals
     */
    private static boolean objectsEqual(Object o1, Object o2) {
        if (o1 == null && o2 == null) {
            return true;
        }
        if (o1 == null || o2 == null) {
            return false; // as they are not both null
        }
        return o1.equals(o2);
    }

        @Override
        public boolean equals(Object o) {
            if (this == o) {
                return true;
            }
            if (o == null || getClass() != o.getClass()) {
                return false;
            }
            CombinationItem that = (CombinationItem) o;
            return Objects.equals(stringPart, that.stringPart) && Objects.equals(digitPart, that.digitPart);
        }