shadows/framework/src/main/java/org/robolectric/shadows/ShadowArscAssetManager.java
@Implementation @HiddenApi
  protected final int loadResourceBagValue(int ident, int bagEntryId, TypedValue outValue,
      boolean resolve) {
    CppAssetManager am = assetManagerForJavaObject();
    if (am == null) {
      return 0;
    }
    final ResTable res = am.getResources();
    return loadResourceBagValueInternal(ident, bagEntryId, outValue, resolve, res);
  }
@Implementation @HiddenApi
  protected final int loadResourceBagValue(int ident, int bagEntryId, TypedValue outValue,
      boolean resolve) {
    CppAssetManager am = assetManagerForJavaObject();
    if (am == null) {
      return 0;
    }
    final ResTable res = am.getResources();
    return loadResourceBagValueInternal(ident, bagEntryId, outValue, resolve, res);
  }
Returns true if the resource was found, filling in mRetStringBlock and
mRetData.