anchor.diff:  }
   
   /**
  - * A `KeywordToken` is a keyword in the language.
  + * A token representing a keyword in the language.
    */
   class KeywordToken extends Token {
     /**
  
positive.code: }
  
  /**
   * A `KeywordTokenWithComment` is a keyword token that is preceded by comments.
   */
  class KeywordTokenWithComment extends KeywordToken {
    /**
  
negative.code:    * the subset of strings in the given array of [strings] starting at the given
     * [offset] and having the given [length]. All of these strings have a common
     * prefix and the next character is at the given [start] index.
     */
    static KeywordState _computeKeywordStateTable(
        int start, List<String> strings, int offset, int length) {
  