Changes to Get App Content

added the optional property detail/items/ctx to the response with the 422 status

added the optional property detail/items/input to the response with the 422 status

added the pattern ^(?:[a-zA-Z0-9_-]+)$ to the path request parameter name

query request parameter version list-of-types was widened by adding types null

for the query request parameter version, the type was generalized from integer to no type

removed the media type application/json for the response with the status 200