@Nullable
  private PySignature readSignatureAttributeFromFile(@NotNull VirtualFile file, @NotNull String name) {
    String content = readAttribute(file);

    if (content != null) {
      String[] lines = content.split("\n");
      for (String sign : lines) {
        String[] parts = sign.split("\t");
        if (parts.length > 0 && parts[0].equals(name)) {
          return stringToSignature(file.getCanonicalPath(), sign);
        }
      }
    }

    return null;
  }
@Nullable
  private PySignature readSignatureAttributeFromFile(@NotNull VirtualFile file, @NotNull String name)