NullPointerException while trying to use application/xml as a body for PUT api

[manoj-saragonda]

Template RAML where the issue is seen,

/myapi:
description: "Some description"
put:
description: "some description."
queryParameters:
someName:
description: "Some name"
type: "string"
required: true
example: "some example"
body:
application/xml:
type: MyAPI
responses:
200:
body:
type: "string"
500:
body:
type: Error