if (collection instanceof FloatArrayAsList) {
      return ((FloatArrayAsList) collection).toFloatArray();
    }

    Object[] boxedArray = collection.toArray();
    int len = boxedArray.length;
    float[] array = new float[len];
    for (int i = 0; i < len; i++) {
      // checkNotNull for GWT (do not optimize)
      array[i] = ((Number) checkNotNull(boxedArray[i])).floatValue();
    }
    return array;
  }

  /**

      return ((DoubleArrayAsList) collection).toDoubleArray();
    }

    Object[] boxedArray = collection.toArray();
    int len = boxedArray.length;
    double[] array = new double[len];
    for (int i = 0; i < len; i++) {
      // checkNotNull for GWT (do not optimize)
      array[i] = ((Number) checkNotNull(boxedArray[i])).doubleValue();
    }
    return array;
  }

  /**

    checkElementsNotNull(array);
    Arrays.sort(array, comparator);
    return asImmutableList(array);
  }

  private static <E> List<E> nullCheckedList(Object... array) {
    for (int i = 0, len = array.length; i < len; i++) {
      if (array[i] == null) {
        throw new NullPointerException("at index " + i);
      }
    }
    @SuppressWarnings("unchecked")
    E[] castedArray = (E[]) array;

    if (collection instanceof IntArrayAsList) {
      return ((IntArrayAsList) collection).toIntArray();
    }

    Object[] boxedArray = collection.toArray();
    int len = boxedArray.length;
    int[] array = new int[len];
    for (int i = 0; i < len; i++) {
      // checkNotNull for GWT (do not optimize)
      array[i] = ((Number) checkNotNull(boxedArray[i])).intValue();
    }
    return array;
  }

  /**

   * stream.toArray()}; if {@code type} is a class literal such as {@code MyType.class}, use {@code
   * stream.toArray(MyType[]::new)}. Otherwise use {@code stream.toArray( len -> (E[])
   * Array.newInstance(type, len))}.
   *
   * @param type the type of the elements
   * @return a newly-allocated array into which all the elements of this fluent iterable have been
   *     copied
   */

      return ((BooleanArrayAsList) collection).toBooleanArray();
    }

    Object[] boxedArray = collection.toArray();
    int len = boxedArray.length;
    boolean[] array = new boolean[len];
    for (int i = 0; i < len; i++) {
      // checkNotNull for GWT (do not optimize)
      array[i] = (Boolean) checkNotNull(boxedArray[i]);
    }
    return array;
  }

  /**

    if (collection instanceof ShortArrayAsList) {
      return ((ShortArrayAsList) collection).toShortArray();
    }

    Object[] boxedArray = collection.toArray();
    int len = boxedArray.length;
    short[] array = new short[len];
    for (int i = 0; i < len; i++) {
      // checkNotNull for GWT (do not optimize)
      array[i] = ((Number) checkNotNull(boxedArray[i])).shortValue();
    }
    return array;
  }

  /**

    if (collection instanceof LongArrayAsList) {
      return ((LongArrayAsList) collection).toLongArray();
    }

    Object[] boxedArray = collection.toArray();
    int len = boxedArray.length;
    long[] array = new long[len];
    for (int i = 0; i < len; i++) {
      // checkNotNull for GWT (do not optimize)
      array[i] = ((Number) checkNotNull(boxedArray[i])).longValue();
    }
    return array;
  }

  /**

   * stream.toArray()}; if {@code type} is a class literal such as {@code MyType.class}, use {@code
   * stream.toArray(MyType[]::new)}. Otherwise use {@code stream.toArray( len -> (E[])
   * Array.newInstance(type, len))}.
   *
   * @param type the type of the elements
   * @return a newly-allocated array into which all the elements of this fluent iterable have been
   *     copied
   */