RAML combining traits and resourceTypes doesn't seem to work.

[jpbelang]

#%RAML 1.0
title: Types and traits issue.
mediaType: application/json
baseUri: http://foo.com

traits:
  has200ResponseCollection:
    responses:
      200:
        body:
          application/json:
            type: array
            items: <<typeName>>

resourceTypes:
  base:
    get?:

  base-collection:
    type:
      base:
    get?:
      is: [
        has200ResponseCollection: {
          typeName: <<typeResponseCollectionItem200Get>>,
        }
      ]

  collection-readonly-get:
    type:
      base-collection:
        typeResponseCollectionItem200Get: <<typeResponseCollectionItem200Get>>
    get:

/parent:
  /child: 
    type:
      collection-readonly-get:
        typeResponseCollectionItem200Get: Stuff

No responses are found.