code: @Deprecated
      protected UResourceBundle findTopLevel(int index) {
          // NOTE: this _barely_ works for top-level resources.  For resources at lower
          // levels, it fails when you fall back to the parent, since you're now
          // looking at root resources, not at the corresponding nested resource.
          // Not only that, but unless the indices correspond 1-to-1, the index will
          // lose meaning.  Essentially this only works if the child resource arrays
          // are prefixes of their parent arrays.
          for (UResourceBundle res = this; res != null; res = res.getParent()) {
              UResourceBundle obj = res.handleGet(index, null, this);
              if (obj != null) {
                  return obj;
              }
          }
          return null;
      }
docs: Returns a resource in a given resource that has a given index, or null if the
  resource is not found.
  
  @param index the index of the resource
  @return the resource, or null
  @see #get(int)
  @deprecated This API is ICU internal only.
  @hide draft / provisional / internal are hidden on Android