code: public void appendPreamble(final XMLUtil util, final Appendable appendable) throws IOException {
          if (this.preambleWritten)
              return;
  
          appendable.append("<table:table");
          util.appendEAttribute(appendable, "table:name", this.builder.getName());
          util.appendEAttribute(appendable, "table:style-name",
                  this.builder.getStyleName());
          util.appendAttribute(appendable, "table:print", false);
          appendable.append("><office:forms");
          util.appendAttribute(appendable, "form:automatic-focus", false);
          util.appendAttribute(appendable, "form:apply-design-mode", false);
          appendable.append("/>");
          this.appendColumnStyles(this.builder.getColumnStyles(), appendable, util);
          this.preambleWritten = true;
      }
docs: Append the preamble
  @param util an util
  @param appendable the destination
  @throws IOException if an I/O error occurs