code: public static By getLocator(Page page, String code, Object... args) {
          return getLocator(page.getApplication(), page.getPageKey() + code, args);
      }
docs: This method read a application descriptor file and return a {@link org.openqa.selenium.By} object (xpath, id, link ...).
  
  @param page
  is target page
  @param code
  Name of element on the web Page.
  @param args
  list of description (xpath, id, link ...) for code.
  @return a {@link org.openqa.selenium.By} object (xpath, id, link ...)