code: public <T extends AbstractJaxb> void setStyleByTreeMap(
              TreeMap<String, String> styleMap) {
          String str = "";
          for (String key : styleMap.keySet()) {
              str += key + ":" + styleMap.get(key) + "; ";
          }
          this.setStyle(str);
      }
docs: <p>
  write style attribute by TreeMap
  </p>
  
  <pre>
  // usage:
  TreeMap&lt;String, String&gt; styleMap = new TreeMap&lt;String, String&gt;();
  styleMap.put(&quot;border-color&quot;, &quot;red&quot;);
  html.getById(Div.class, &quot;hellomsg&quot;).setStyleByTreeMap(styleMap);
  // output:
  // &lt;div id=&quot;hellomsg&quot; style=&quot;border-color:red;&quot;&gt;...&lt;/div&gt;
  </pre>
  
  @param styleMap