Given a `GroupLayout`, the elements in the group are matched with `RecordComponent`s. This can be done for arbitrary element types of arbitrary depth. As a simple example, one can extract a `Point` like so:

```
    private static final GroupLayout POINT_LAYOUT = MemoryLayout.structLayout(
            JAVA_INT.withName("x"),
            JAVA_INT.withName("y"));

    MemorySegment segment = MemorySegment.ofArray(new int[]{3, 4});

    Point point = POINT_LAYOUT.recordMapper(Point.class)
          .apply(segment); // Point[x=3, y=4]

```