private static void writeAttributeToAFile(@NotNull VirtualFile file, @NotNull String attrString) {
    try {
      CALL_SIGNATURES_ATTRIBUTE.writeAttributeBytes(file, attrString.getBytes(StandardCharsets.UTF_8));
    }
    catch (IOException e) {
      LOG.warn("Can't write attribute " + file.getCanonicalPath() + " " + attrString);
    }
  }
private static void writeAttributeToAFile(@NotNull VirtualFile file, @NotNull String attrString)