docs: function() {
  
          var template = document.getElementById(this.config.template);
  
          if(!template) {
              throw new Error("Bitcoin address template element missing:" + this.config.template);
          }
  
          template = $(template);
  
          if(template.size() != 1) {
              throw new Error("Bitcoin address template DOM does not contain a single element");
          }
  
          return template;
      }