anchor.diff:    }
   
     Future<void> _addFix_createGetter() async {
  -    // TODO(brianwilkerson) Determine whether this await is necessary.
  -    await null;
       if (node is! SimpleIdentifier) {
         return;
       }
  
positive.code:   }
  
    Future<void> _addFix_removeParentheses_inGetterInvocation() async {
      // TODO(brianwilkerson) Determine whether this await is necessary.
      await null;
      if (node is SimpleIdentifier && node.parent is MethodInvocation) {
        MethodInvocation invocation = node.parent as MethodInvocation;
        if (invocation.methodName == node && invocation.target != null) {
  
negative.code:   }
  
    Future<void> _addFix_insertSemicolon() async {
      if (error.message.contains("';'")) {
        if (_isAwaitNode()) {
          return;
  