@Override
    public void close() {
        IOUtils.closeQuietly(this.fileChannel);
    }
Reads bytes from a file

@param startPos position to read from in the file
@param length   number of bytes to read
@param buffer   buffer to store read bytes in
@throws IOException in case anything goes wrong
main/src/main/java/cgeo/geocaching/storage/FileByteReader.java