anchor.diff:    String get displayName;
   
     /**
  -   * Return the content of the documentation comment (including delimiters) for
  -   * this element, or `null` if this element does not or cannot have
  -   * documentation.
  -   */
  -  String get documentationComment;
  -
  -  /**
      * Return the source range of the documentation comment for this element,
      * or `null` if this element does not or cannot have a documentation.
      *
  
positive.code:  *
   * Clients may not extend, implement or mix-in this class.
   */
  abstract class FunctionTypeAliasElement implements FunctionTypedElement {
    /**
     * An empty array of type alias elements.
     */
  
negative.code:    */
    @deprecated
    SourceRange get docRange;
  
    /**
     * Return the content of the documentation comment (including delimiters) for
     * this element, or `null` if this element does not or cannot have
     * documentation.
     */
    String get documentationComment;
  
    /**
     * Return the element that either physically or logically encloses this
  