Support for identifying a concept using a string scalar

[dselman]

Bug Report 🐛 or Feature?

It would be useful to be able to identify concepts using a scalar.

Expected Behavior

Be able to reference a scalar and use it as an identifying field.

Current Behavior

namespace test

enum Color {
  o RED
  o GREEN
  o BLUE
}

scalar Email extends String

@resource
concept Person identified by email {
  o Email email
  o Color color
}

IllegalModelException: Class "Person" is identified by field "email", but the type of the field is not "String". Line 12 column 1, to line 16 column 2. 

Possible Solution

Steps to Reproduce

Context (Environment)

Desktop

• OS: [e.g. macOS]
• Browser: [e.g. Chrome, Safari]
• Version: [e.g. 0.22.15]

Detailed Description

Possible Implementation

[mttrbrts]

Example updated.