Feature request, path annotation instead of "root"?

[lukepighetti]

Existing method

type UserName extends String {
  write() { root.users[this] == null }
  validate() { this.length <= 50 && this.test(/^(\w)+$/) }
}

Proposed method

type UserName extends String {
  write() { path /users/{this} == null }
  validate() { this.length <= 50 && this.test(/^(\w)+$/) }
}