code: private int parseListItem (int start) {
          start = skipSpacesToNewline(start, wikiLength); // skip spaces
          int end=parseItem(start, null, ContextType.LIST_ITEM);
          if ((listLevels[listLevel]=='>' || listLevels[listLevel]==':') &&
              wikiText.substring(start, end).trim().length()==0) { // empty line within blockquote/div
              if (!blockquoteBR) {
                  sb.append("<br/><br/>");
                  blockquoteBR=true;
              }
          }
          else {
              blockquoteBR=false;
          }
          return end;
      }
docs: Same as parseItem(); blank line adds {@code <br/><br/>}.
  
  @param start