docs: public void write(byte... values) {
          if (count >= content.length - values.length) {
              byte[] ns = new byte[content.length + values.length];
              System.arraycopy(content, 0, ns, 0, count);
              this.content = ns;
          }
          System.arraycopy(values, 0, content, count, values.length);
          count += values.length;
      }