diff --git a/android/sdk.go b/android/sdk.go
index d66816d..73cb256 100644
--- a/android/sdk.go
+++ b/android/sdk.go
@@ -164,6 +164,9 @@
 	// to the zip
 	CopyToSnapshot(src Path, dest string)
 
+	// Unzip the supplied zip into the snapshot relative directory destDir.
+	UnzipToSnapshot(zipPath Path, destDir string)
+
 	// Get the AndroidBpFile for the snapshot.
 	AndroidBpFile() GeneratedSnapshotFile