private @Nullable VirtualFile findBuiltInSchemaByReference(@NotNull String reference) {
    String id = JsonPointerUtil.normalizeId(reference);
    if (!myBuiltInSchemaIds.getValue().contains(id)) return null;
    for (VirtualFile file : myState.getFiles()) {
      if (id.equals(JsonCachedValues.getSchemaId(file, myProject))) {
        return file;
      }
    }
    return null;
  }
private @Nullable VirtualFile findBuiltInSchemaByReference(@NotNull String reference)