/**
* Read from the file.
*
* @param pos the write position
* @param len the number of bytes to read
* @return the byte buffer
*/
public ByteBuffer readFully(long pos, int len) {
ByteBuffer dst = ByteBuffer.allocate(len);
DataUtils.readFully(file, pos, dst);
readCount++;
readBytes += len;
return dst;
}
