Method transfer

src/main/java/com/volmit/adapt/util/IO.java:146–154

Transfers the length of the buffer amount of data from the input stream to the output stream @param in the input @param out the output @param buffer the buffer and size to use @return the actual transfered amount @throws IOException shit happens

(InputStream in, OutputStream out, byte[] buffer)

     * @throws IOException shit happens
     */
    public static int transfer(InputStream in, OutputStream out, byte[] buffer) throws IOException {
        int r = in.read(buffer);

        if (r != -1) {
            out.write(buffer, 0, r);
        }

        return r;
    }

    /**
     * Transfers the length of the buffer amount of data from the input stream to