code: public void setCIAFactbook(String ciaFactbook) {
      if(ciaFactbook != null) {
        ciaFactbook = ciaFactbook.trim();
      }
      this.ciaFactbook = ciaFactbook;
    }
docs: Set link to CIA World Factbook.  Note: Provided only for entities that exist in this
  that exist in this linked data-set.
  
  @param ciaFactbook link to CIA World Factbook