--- old/src/jdk.jextract/share/classes/com/sun/tools/jextract/tree/Tree.java	2018-09-19 19:35:37.000000000 +0530
+++ new/src/jdk.jextract/share/classes/com/sun/tools/jextract/tree/Tree.java	2018-09-19 19:35:37.000000000 +0530
@@ -69,14 +69,18 @@
         return c.isDeclaration();
     }
 
-    public final boolean isDefinition() {
-        return c.isDefinition();
+    public final boolean isInvalid() {
+        return c.isInvalid();
     }
 
     public final boolean isPreprocessing() {
         return c.isPreprocessing();
     }
 
+    public final boolean isDefinition() {
+        return c.isDefinition();
+    }
+
     public final boolean isFromMain() {
         return location().isFromMainFile();
     }