code: @SuppressWarnings("unchecked")
      public <T extends XPathBuilder> T addSearchTextType(SearchType... searchTextTypes) {
          if (searchTextTypes != null) {
              this.searchTextType.addAll(0, Arrays.asList(searchTextTypes));
          }
          this.searchTextType = cleanUpSearchType(this.searchTextType);
          return (T) this;
      }
docs: <p><b>Used for finding element process (to generate xpath address)</b></p>
  This method add new searchTextTypes to existing searchTextTypes.
  
  @param searchTextTypes accepted values are: {@link SearchType#EQUALS}
  @param <T>             the element which calls this method
  @return this element