Index: utils/template/htmltree.dart |
diff --git a/utils/template/htmltree.dart b/utils/template/htmltree.dart |
index 85453fef86cc322d9edff1f179e7e54bdd798bf9..e4618dbf7b5fb312c502045fb6ca5f4d1bd6bcbc 100644 |
--- a/utils/template/htmltree.dart |
+++ b/utils/template/htmltree.dart |
@@ -287,7 +287,7 @@ class TemplateCall extends ASTNode { |
String toString() => "\$\{#${toCall}${params}}"; |
} |
-interface TreeVisitor { |
+abstract class TreeVisitor { |
void visitIdentifier(Identifier node); |
void visitStringValue(StringValue node); |
void visitCommentDefinition(CommentDefinition node); |