Bug: List of Maps of Strings generated code does not compile.

[jjjasper]

Schema type defined as

type: object
properties:
  challenges:
    type: array
    items:
      type: object
      additionalProperties:
        type: string
  data:
    type: object
    additionalProperties:
      type: string   

Results in

@Valid
private List<Map&lt;String, String&gt;> challenges;