lastIndexOf

fun ByteBuffer.lastIndexOf(element: Byte): Int
fun ShortBuffer.lastIndexOf(element: Short): Int
fun IntBuffer.lastIndexOf(element: Int): Int
fun LongBuffer.lastIndexOf(element: Long): Int
fun FloatBuffer.lastIndexOf(element: Float): Int
fun DoubleBuffer.lastIndexOf(element: Double): Int
fun CharBuffer.lastIndexOf(element: Char): Int

Returns last index of element, or -1 if the buffer does not contain element.