code: function (source) {
          var tocStartIndex = source.indexOf(TOC_COMMENT),
              tocEndIndex = source.indexOf(TOC_END_COMMENT, tocStartIndex);
  
          if (tocStartIndex === -1 || tocEndIndex === -1) return source;
  
          return source.substring(0, tocStartIndex + TOC_COMMENT.length) +
                  source.substring(tocEndIndex + TOC_END_COMMENT.length);
      }
docs: Cleans a source from an existing TOC
  @param {String} source
  @returns {String}