1 files changed, 12 insertions, 0 deletions
diff --git a/src/main/java/com/google/devtools/build/lib/query2/engine/LabelsFunction.java b/src/main/java/com/google/devtools/build/lib/query2/engine/LabelsFunction.java
index 140e732437..5a918cb889 100644
--- a/src/main/java/com/google/devtools/build/lib/query2/engine/LabelsFunction.java
+++ b/src/main/java/com/google/devtools/build/lib/query2/engine/LabelsFunction.java
@@ -14,6 +14,7 @@
 package com.google.devtools.build.lib.query2.engine;
 
 import com.google.common.collect.ImmutableList;
+import com.google.common.util.concurrent.ListeningExecutorService;
 import com.google.devtools.build.lib.query2.engine.QueryEnvironment.Argument;
 import com.google.devtools.build.lib.query2.engine.QueryEnvironment.ArgumentType;
 import com.google.devtools.build.lib.query2.engine.QueryEnvironment.QueryFunction;
@@ -80,4 +81,15 @@ class LabelsFunction implements QueryFunction {
       }
     });
   }
+
+  @Override
+  public <T> void parEval(
+      QueryEnvironment<T> env,
+      VariableContext<T> context,
+      QueryExpression expression,
+      List<Argument> args,
+      ThreadSafeCallback<T> callback,
+      ListeningExecutorService executorService) throws QueryException, InterruptedException {
+    eval(env, context, expression, args, callback);
+  }
 }