Implemented declared providers interface #1727
--
MOS_MIGRATED_REVID=133699895
diff --git a/src/main/java/com/google/devtools/build/lib/analysis/TransitiveInfoCollection.java b/src/main/java/com/google/devtools/build/lib/analysis/TransitiveInfoCollection.java
index 6dd8dd7..d1a9ece 100644
--- a/src/main/java/com/google/devtools/build/lib/analysis/TransitiveInfoCollection.java
+++ b/src/main/java/com/google/devtools/build/lib/analysis/TransitiveInfoCollection.java
@@ -18,7 +18,7 @@
import com.google.devtools.build.lib.cmdline.Label;
import com.google.devtools.build.lib.skylarkinterface.SkylarkModule;
import com.google.devtools.build.lib.skylarkinterface.SkylarkModuleCategory;
-
+import com.google.devtools.build.lib.syntax.SkylarkIndexable;
import javax.annotation.Nullable;
/**
@@ -52,7 +52,7 @@
+ "These extra providers are defined in the <code>struct</code> returned by the rule "
+ "implementation function.</li>"
+ "</ul>")
-public interface TransitiveInfoCollection {
+public interface TransitiveInfoCollection extends SkylarkIndexable {
/**
* Returns the transitive information provider requested, or null if the provider is not found.
