asLongBuffer
Creates a view of this byte buffer as a long buffer.
The content of the new buffer will start at this buffer's current position. Changes to this buffer's content will be visible in the new buffer, and vice versa. The new buffer's position will be zero, its capacity and limit will be the number of longs remaining in this buffer divided by eight, and its byte order will be that of this buffer.
Return
A new long buffer that shares this buffer's content