[keycloak-user] Why does KeycloakRestTemplate Bean needs to be Prototype scoped?

Hi all, I hope I am right here. I am doing a blog-series in german about Keycloak (3.2.1 Final) and its integration in Spring Boot and Spring Security. Everything is good so far, but there's one Thing that bothers me. As the subject states: Why does KeycloakRestTemplate Bean needs to be Prototype scoped? The docs say in 4.2.1.8: "To simplify communication between clients, Keycloak provides an extension of Spring’s RestTemplate that handles bearer token authentication for you. To enable this feature your security configuration must add the KeycloakRestTemplate bean. Note that it must be scoped as a prototype to function correctly." So, I don't just want to give my readers something they could read out of the docs, so I looked for the standard Scope of RestTemplate, which seems to be Singleton, for RestTemplate seems to be threadsafe and creation of resttemplates is somewhat costly (source: https://stackoverflow.com/questions/22989500/is-resttemplate-thread-safe and links/comments) I hope someone could give me more insights here. Best regards, Dominik