private static @NotNull StringBuilder buildSignature(@NotNull PyChangeInfo changeInfo, @NotNull PyCallExpression call) {
    final PyArgumentList argumentList = call.getArgumentList();
    final PyExpression callee = call.getCallee();
    String name = callee != null ? callee.getText() : changeInfo.getNewName();
    StringBuilder builder = new StringBuilder(name + "(");
    if (argumentList != null) {
      List<String> params = collectParameters(changeInfo, call);
      builder.append(StringUtil.join(params, ","));
    }
    builder.append(")");
    return builder;
  }
private static @NotNull StringBuilder buildSignature(@NotNull PyChangeInfo changeInfo, @NotNull PyCallExpression call)