Ignite Authentication Issue

[Evanraisul]

https://ignite.apache.org/docs/latest/security/authentication#ignite-authentication
Here, in the apache-ignite official document said, "Ignite creates a user account with the name "ignite" and password "ignite". This account is meant to be used to create other user accounts for your needs. Then simply delete the "ignite" account."

According this, I create a user TEST. Then try to drop the user "ignite". But, I am getting error :
Enter username for jdbc:ignite:thin://127.0.0.1/: TEST
Enter password for jdbc:ignite:thin://127.0.0.1/: *******
sqlline version 1.9.0
0: jdbc:ignite:thin://127.0.0.1/> DROP USER ignite;
Error: User management operations are not allowed for user. [curUser=TEST] (state=50000,code=1)

is there any issue with my trial? Or there is any other way to create a new user using full privileges which can delete the "ignite" user? Or any way to create custom users with custom username & password using the configuration.xml file?