Index: editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/internal/object/InstanceState.java |
diff --git a/editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/internal/object/InstanceState.java b/editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/internal/object/InstanceState.java |
index 2a54e372aff08abc73b5606b0881033bf009e726..45dcd2064efcdd42d1823c1f38a7822d0de505ea 100644 |
--- a/editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/internal/object/InstanceState.java |
+++ b/editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/internal/object/InstanceState.java |
@@ -221,6 +221,13 @@ public abstract class InstanceState { |
} |
/** |
+ * Return true if this object represents an unknown value. |
+ */ |
+ public boolean isUnknown() { |
+ return false; |
+ } |
+ |
+ /** |
* Return the result of invoking the '<' operator on this object with the given argument. |
* |
* @param rightOperand the right-hand operand of the operation |