[keycloak-user] How to escape dot symbol in Token Claim Name

Greetings, When specifying Token Claim Name in a mapper, user can write claim name in dot notation in order to create nested JSON objects. The problem is, that I should do completley the opposite. I need a token name that looks like "http://domain.name/claims/customer_number". Keycloak sees the dot in the name and creates the following claim: { "http://domain": { "name/claims/customer_number": "value" } } Is there any way to escape this dot in the claim name? I've tried the backslash character but it didn't work. And I didn't find the information about this anywhere. Thanks, Alexander