diff --git a/rust/source_provider.go b/rust/source_provider.go
index 3236bce..27c62c2 100644
--- a/rust/source_provider.go
+++ b/rust/source_provider.go
@@ -43,6 +43,7 @@
 	SourceProviderProps() []interface{}
 	SourceProviderDeps(ctx DepsContext, deps Deps) Deps
 	setSubName(subName string)
+	getSubName() string
 	setOutputFiles(outputFiles android.Paths)
 }
 
@@ -100,6 +101,10 @@
 	sp.subName = subName
 }
 
+func (sp *BaseSourceProvider) getSubName() string {
+	return sp.subName
+}
+
 func (sp *BaseSourceProvider) setOutputFiles(outputFiles android.Paths) {
 	sp.OutputFiles = outputFiles
 }