Convert isX() methods to isX getter.

pkg/analyzer_experimental/lib/src/generated/html.dart

 // This code was auto-generated, is not intended to be edited, and is subject to
 // significant change. Please see the README file for more information.
 library engine.html;
 import 'dart:collection';
 import 'java_core.dart';
 import 'java_engine.dart';
 import 'source.dart';
 import 'error.dart';
 import 'instrumentation.dart';
 import 'element.dart' show HtmlElementImpl;
@@ skipping 100 matching lines @@
    * @return the token type (not `null`)
    */
   TokenType get type => _type;
 
   /**
    * Return `true` if this token is a synthetic token. A synthetic token is a token that was
    * introduced by the parser in order to recover from an error in the code. Synthetic tokens always
    * have a length of zero (`0`).
    * @return `true` if this token is a synthetic token
    */
-  bool isSynthetic() => length == 0;
+  bool get isSynthetic => length == 0;
 
   /**
    * Set the next token in the token stream to the given token. This has the side-effect of setting
    * this token to be the previous token for the given token.
    * @param token the next token in the token stream
    * @return the token that was passed in
    */
   Token setNext(Token token) {
     _next = token;
     token.previous = this;
@@ skipping 1487 matching lines @@
    */
   void set element(HtmlElementImpl element2) {
     this._element = element2;
   }
   void visitChildren(XmlVisitor<Object> visitor) {
     for (XmlTagNode node in _tagNodes) {
       node.accept(visitor);
     }
   }
 }