public static byte[] nextBytes(final int count) {
        Validate.isTrue(count >= 0, "Count cannot be negative.");

        final byte[] result = new byte[count];
        RANDOM.nextBytes(result);
        return result;
    }
<p>
Creates an array of random bytes.
</p>

@param count the size of the returned array
@return the random byte array
@throws IllegalArgumentException if {@code count} is negative
android/android_framework/base/src/main/java/lang3/RandomUtils.java