Creates an image asset ingestion task.

Returns may contain field 'note' with value

'ALREADY_EXISTS' if an identical task with the same ID already exists. Null if a callback is specified.

UsageReturns, request, callback)ProcessingResponse
taskIdStringID for the task (obtained using newTaskId).
requestIngestionRequestThe object that describes the ingestion.
callbackFunction, optionalAn optional callback. If not supplied, the call is made synchronously.