code: public JBBPTextWriter HR() throws IOException {
      if (this.flagCommentsAllowed) {
        this.ensureNewLineMode();
        this.writeIndent();
        this.write(this.prefixHR);
        for (int i = 0; i < this.hrLength; i++) {
          this.write(this.hrChar);
        }
      }
      this.BR();
      return this;
    }
docs: Print horizontal rule. If comments are disabled then only next line will be
  added.
  
  @return the context
  @throws IOException it will be thrown for transport errors
  @see #EnableComments()
  @see #DisableComments()