code: private void processLegacyModuleCall(String namespace, Node googModuleCall, JSModule module) {
      registerAnyProvidedPrefixes(namespace, googModuleCall, module);
      providedNames.put(
          namespace,
          new ProvidedName(
              namespace,
              googModuleCall,
              module,
              /* explicit= */ true,
              /* fromPreviousProvide= */ false));
    }
docs: Handles a goog.module that is a legacy namespace.