@Override
    public int read(byte[] bytes, int off, int len) throws IOException {
        return read(buffer -> readFromBuffer(buffer, bytes, off, len));
    }
Closes this {@link InputStream} and releases any system resources associated with the stream.
Sets EOS, if it has not been set yet. Drains all the allocated buffers.
core/src/main/java/com/linecorp/armeria/internal/common/stream/ByteBufsInputStream.java