[USER (data scientist)]: Awesome, thanks! Now, how about getting their client IDs? Please generate the code with the output in index type.
My template of code snippet is:

---BEGIN CODE TEMPLATE---

import pandas as pd  
import pickle
from decision_company import read_csv_file, logical_and, logical_or, filter_by_condition, count_rows, fetch_index, convert_to_list, fetch_column

# Load the dataset  
credit_customers = read_csv_file("credit_customers.csv")   
  
# YOUR SOLUTION BEGIN:
<code1>
[GENERATE YOUR CODE]
</code1>
# YOUR SOLUTION END

print(f"stable_employment_idx: {stable_employment_idx}")  

# save data
pickle.dump(stable_employment_idx, open("./pred_result/stable_employment_idx.pkl","wb"))

---END CODE TEMPLATE---

[YOU (AI assistant)]: No problem! You can extract the client IDs like this:

# MY SOLUTION BEGIN:
