code: public boolean isMatchingAny() {
          if (this.levels == null) {
              return false;
          }
          int i = 0;
          int n = this.levelCounter;
          while (n-- != 0) {
              if (this.levels[i].isSelectionActive()) {
                  return true;
              }
              i++;
          }
          return false;
      }
docs: <p>
  Returns whether any selectors are currently matching, at any level.
  </p>
  
  @return true if any selectors are matching at any level, false if not.