text: /**
   * Created by lydashsbok on 14-7-11.
   */
  
  goog.provide('bok.SingletonBase');
  
  function SingletonBase() {
      if(!this.constructor._instance_) {
          this.constructor._instance_ = this;
          this.constructor._getInstance_ = function() {
              return new this();
          };
      }
  
      return this.constructor._instance_;
  }
  