SpiceDB is an open source, Google Zanzibar-inspired, database system for creating and managing security-critical application permissions.

SpiceDB

Is there built-in way to reference the current object in the schema? 

I would like to do something along the lines of:
```
definition user {
    relation platform: platform

    permission sensitive_action: self + platform->super_admin
}
```

I think adding an extra `self` relation would work but that involves creating the tuple for every object which is not ideal:
```
definition user {
    relation self: user
    relation platform: platform

    permission sensitive_action: self + platform->super_admin
}
```

Is there any better way to do so (and/or would that even work)?