public static int arrayBaseOffset(final Class<?> clazz) {
        return hasUnsafe() ? UNSAFE_ACCESSOR.arrayBaseOffset(clazz) : -1;
    }
Reports the offset of the first element in the storage allocation of a
given array class.
jraft-core/src/main/java/com/alipay/sofa/jraft/util/internal/UnsafeUtil.java