docs: private boolean keepTag(final String tagName) {
  
          boolean result = false;
          // include mode:
          if (m_visibleTags.size() > 0) {
              if (m_visibleTags.contains(tagName)) {
                  result = true;
              } else {
                  result = false;
              }
          }
          // Power of hide: if no visible tags configured this works as a normal remove,
          // if visible tags are configured this can change a visible tag to be invisible
          if (m_invisibleTags.contains(tagName)) {
              result = false;
          }
  
          return result;
      }