YAML Schema validation for Flow\Neos

Schema-scribble.yaml

#
# NodeTypes
#
'*':
  reference: 'nodeTypeName'
  type: shape
  options:
    shape:
      'abstract': { type: bool }
      'final': { type: bool }
      'superTypes':
          type: object
          options:
            of: { type: bool }
            keys:
              validate:
                validator: 'MatchReference'
                options: { reference: 'nodeTypeName', excludeParents: true }
      'childNodes':
          type: object
          options:
            of:
              type: shape
              options:
                shape:
                  'type': 
                    type: string
                    validate:
                      validator: 'MatchReference'
                      options: { reference: 'nodeTypeName', excludeParents: true }