private static void declareReusedVariables(@NotNull PsiElement appendLocation, @NotNull List<String> reusedVariables) {
    if (reusedVariables.isEmpty()) {
      return;
    }
    PsiElementFactory factory = JavaPsiFacade.getElementFactory(appendLocation.getProject());

    for (String variable : reusedVariables) {
      PsiStatement declaration = factory.createStatementFromText(variable, appendLocation);
      appendLocation = appendLocation.getParent().addAfter(declaration, appendLocation);
    }
  }
private static void declareReusedVariables(@NotNull PsiElement appendLocation, @NotNull List<String> reusedVariables)