* they're defined above -- including logic to add and subtract 1 to map between the values stored
   * in the predecessor/successor arrays and the indexes in the elements array that they identify.
   */

      // Shift value left while iterating logically through the array.
      result |= (input[offset + i] & 0xFFL) << (i * 8);
    }
    return result;
  }

  /**
   * Store 8 bytes into the provided array at the indicated offset, using the value provided.
   *
   * @param sink the output byte array
   * @param offset the offset into the array at which to start writing
   * @param value the value to write
   */

      }

      @Override
      @SuppressWarnings("nullness") // b/192354773 in our checker affects toArray declarations
      public <T extends @Nullable Object> T[] toArray(T[] array) {
        return standardToArray(array);
      }
    };
  }

  @Override
  @CanIgnoreReturnValue
  @CheckForNull
  public B put(Class<? extends @NonNull B> key, @ParametricNullness B value) {
    cast(key, value);

      // Shift value left while iterating logically through the array.
      result |= (input[offset + i] & 0xFFL) << (i * 8);
    }
    return result;
  }

  /**
   * Store 8 bytes into the provided array at the indicated offset, using the value provided.
   *
   * @param sink the output byte array
   * @param offset the offset into the array at which to start writing
   * @param value the value to write
   */

  }

  /** Returns a byte array of length size that has values 0 .. size - 1. */
  static byte[] newPreFilledByteArray(int size) {
    return newPreFilledByteArray(0, size);
  }

  /** Returns a byte array of length size that has values offset .. offset + size - 1. */
  static byte[] newPreFilledByteArray(int offset, int size) {
    byte[] array = new byte[size];
    for (int i = 0; i < size; i++) {

      }

      @Override
      @SuppressWarnings("nullness") // b/192354773 in our checker affects toArray declarations
      public <T extends @Nullable Object> T[] toArray(T[] array) {
        return standardToArray(array);
      }
    };
  }

  @Override
  @CanIgnoreReturnValue
  @CheckForNull
  public B put(Class<? extends @NonNull B> key, @ParametricNullness B value) {
    cast(key, value);