Summary and Problem
-------

The method `jdk.incubator.vector.VectorMask.laneIsSet` does not specify that an exception is thrown if the given lane index is out of bounds.

Solution
--------

Update `VectorMask.laneIsSet` to specify `IndexOutOfBoundsException` is thrown if a given lane index is out of bounds.

Specification
-------------

`VectorMask.laneIsSet` is updated to:

    /**
     * Tests if the lane at index {@code i} is set
     * @param i the lane index
     *
     * @return true if the lane at index {@code i} is set, otherwise false
     * @throws IndexOutOfBoundsException if the index is out of range
     * ({@code < 0 || >= length()})
     */
    public abstract boolean laneIsSet(int i);

The changes are:

          * @param i the lane index
          *
          * @return true if the lane at index {@code i} is set, otherwise false
    +     * @throws IndexOutOfBoundsException if the index is out of range
    +     * ({@code < 0 || >= length()})
          */
         public abstract boolean laneIsSet(int i);