I need to create non nullable columns in a GridDB Cloud collection container

I´m trying to create a table (collection container) using GridDB Cloud, using a Python script, as shown in GridDB Developers Quick Start Guide, available here. The script runs fine, but with the exception of the primary key column (Order_ID), all other columns have their nullity set to NULL. I´d like to be able to set all columns to NOT NULL. Any ideas?

The Python script that drops and then creates the Orders table is shown below:

#CreateOrderTable.py
import requests
import json

# Set table name
tableName = "Orders"

# URL and authentication
url = "https://cloud5197.griddb.com:443/griddb/v2/gs_clustermfcloud5197/dbs/s4Rqrm4g/containers"

headers = {
  'Content-Type': 'application/json',
  'Authorization': 'Basic **************************',
  'User-Agent': 'PostmanRuntime/7.29.0'
}

# If table exists, drop it...
payload = json.dumps([
  tableName
])
response = requests.request("DELETE", url, headers=headers, data=payload)
print("Drop table result: ", response.status_code)

# Create table Order
payload = json.dumps({
  "container_name": tableName,
  "container_type": "COLLECTION",
  "rowkey": True,
  "columns": [
    {
      "name": "Order_ID",
      "type": "INTEGER",
    },
    {
      "name": "Order_Date",
      "type": "TIMESTAMP",
      
    },
    {
      "name": "Client_ID",
      "type": "INTEGER",
    },
    {
      "name": "Order_NF",
      "type": "STRING"
    }
  ]
})
response = requests.request("POST", url, headers=headers, data=payload)
print("Create table result: ", response.status_code)

It seems that GridDB´s REST API doesn't currently support a key-value pair to set a column´s nullity, such as "nullable": False. A workaround for that is to use the query editor of GridDB´s management website to create the table, using a regular CREATE TABLE SQL statement:

Create table Orders (
Order_ID INTEGER NOT NULL PRIMARY KEY,
Order_Date TIMESTAMP NOT NULL,
Client_ID INTEGER NOT NULL,
Order_NF STRING NOT NULL)