Rust: support ParcelableHolder

Bug: 169035750
Test: m
Change-Id: I2fbd4e5e11272a87fac948e68f8edc703f70f910
diff --git a/aidl_to_rust.h b/aidl_to_rust.h
index 292e4df..7ba6d75 100644
--- a/aidl_to_rust.h
+++ b/aidl_to_rust.h
@@ -70,7 +70,7 @@
 
 bool TypeIsInterface(const AidlTypeSpecifier& type, const AidlTypenames& typenames);
 
-bool TypeHasDefault(const AidlTypeSpecifier& type, const AidlTypenames& typenames);
+bool TypeNeedsOption(const AidlTypeSpecifier& type, const AidlTypenames& typenames);
 
 }  // namespace rust
 }  // namespace aidl