/**
 * Document-method: MessagePack::Unpacker#feed
 *
 * call-seq:
 *   unpacker.feed(data)
 *
 * Fills the internal buffer with the specified buffer.
 */
static VALUE MessagePack_Unpacker_feed(VALUE self, VALUE data)
{
        UNPACKER(self, mp);
        StringValue(data);
        feed_buffer(mp, RSTRING_PTR(data), RSTRING_LEN(data));
        return Qnil;
}