public static <T extends @Nullable Object> T[] concat(
      T[] first, T[] second, Class<@NonNull T> type) {
    T[] result = newArray(type, first.length + second.length);
    System.arraycopy(first, 0, result, 0, first.length);
    System.arraycopy(second, 0, result, first.length, second.length);
    return result;
  }

  /**
   * Returns a new array that prepends {@code element} to {@code array}.
   *

  public static <T extends @Nullable Object> T[] concat(
      T[] first, T[] second, Class<@NonNull T> type) {
    T[] result = newArray(type, first.length + second.length);
    System.arraycopy(first, 0, result, 0, first.length);
    System.arraycopy(second, 0, result, first.length, second.length);
    return result;
  }

  /**
   * Returns a new array that prepends {@code element} to {@code array}.
   *

        if (defaultWords == null) {
            updateDefaultBadwords();
        }
        final String[] concat = new String[defaultWords.length + badWords.length];
        System.arraycopy(badWords, 0, concat, 0, badWords.length);
        System.arraycopy(defaultWords, 0, concat, badWords.length, defaultWords.length);
        return concat;
    }

    public void add(final String badWord) {
        if (logger.isDebugEnabled()) {

        byte[] result;
        result = cipher.doFinal(data);

        decrypt = new byte[result.length];
        System.arraycopy(result, 0, decrypt, 0, result.length);

        int tempSize = decrypt.length - 24;

        byte[] output = new byte[tempSize];
        System.arraycopy(decrypt, 24, output, 0, tempSize);

        decrypt = output;
        return decrypt;
    }

        if (path.segments.length == 0) {
            return this;
        }
        String[] concat = new String[segments.length + path.segments.length];
        System.arraycopy(segments, 0, concat, 0, segments.length);
        System.arraycopy(path.segments, 0, concat, segments.length, path.segments.length);
        return new Path(concat, absolute);
    }

    public String getPath() {
        if (fullPath == null) {

            return new AndSpec<T>(specs);
        }
        Spec<? super T>[] combinedSpecs = uncheckedCast(ObjectArrays.newArray(Spec.class, thisLength + specs.length));
        System.arraycopy(thisSpecs, 0, combinedSpecs, 0, thisLength);
        System.arraycopy(specs, 0, combinedSpecs, thisLength, specs.length);
        return new AndSpec<T>(combinedSpecs);
    }

    /**
     * Typed and() method for a single {@link Spec}.
     *

    Object[] array = new Object[paramCount + others.length];
    arrayCopy(array, 0, e1, e2, e3, e4, e5, e6, e7, e8, e9, e10, e11, e12);
    arrayCopy(array, paramCount, others);
    return new RegularImmutableList<E>(ImmutableList.<E>nullCheckedList(array));
  }

  private static void arrayCopy(Object[] dest, int pos, Object... source) {
    System.arraycopy(source, 0, dest, pos, source.length);
  }

    }
  }

  private static Double[] concat(Double[] left, Double[] right) {
    Double[] result = new Double[left.length + right.length];
    System.arraycopy(left, 0, result, 0, left.length);
    System.arraycopy(right, 0, result, left.length, right.length);
    return result;
  }

  public abstract static class TestDoubleListGenerator implements TestListGenerator<Double> {
    @Override

    }
  }

  private static Long[] concat(Long[] left, Long[] right) {
    Long[] result = new Long[left.length + right.length];
    System.arraycopy(left, 0, result, 0, left.length);
    System.arraycopy(right, 0, result, left.length, right.length);
    return result;
  }

  public abstract static class TestLongListGenerator implements TestListGenerator<Long> {
    @Override

    }
  }

  private static Short[] concat(Short[] left, Short[] right) {
    Short[] result = new Short[left.length + right.length];
    System.arraycopy(left, 0, result, 0, left.length);
    System.arraycopy(right, 0, result, left.length, right.length);
    return result;
  }

  public abstract static class TestShortListGenerator implements TestListGenerator<Short> {
    @Override