什么是micronaut的@AuthenticationPrincipal替代方案？

micronaut:
  security:
    enabled: true

import io.micronaut.security.authentication.Authentication;
import io.micronaut.security.utils.SecurityContext;

...

@Inject
private SecurityContext securityContext;

public void someMethod() {
    Authentication authentication = securityContext.getAuthentication();
    if (authentication != null) {
        // 获取认证主体
        Object principal = authentication.getPrincipal();
        // 获取角色权限
        Collection<String> roles = authentication.getRoles();
        // 执行相应的操作
        // ...
    }
}