code: @SuppressWarnings("unchecked")
      public <T extends XPathBuilder> T setElPathSuffix(final String key, final String elPathSuffix) {
          if (Strings.isNullOrEmpty(elPathSuffix)) {
              this.elPathSuffix.remove(key);
          } else {
              this.elPathSuffix.put(key, elPathSuffix);
          }
          return (T) this;
      }
docs: <p><b>Used for finding element process (to generate xpath address)</b></p>
  <p>Example:</p>
  <pre>
  TODO
  </pre>
  
  @param key          suffix key
  @param elPathSuffix additional identification xpath element that will be added at the end
  @param <T>          the element which calls this method
  @return this element